.A voltaic cell consists of a Ni electrode in 1.0M Ni(NO3
)2
and an Fe electrode
in 1.0M Fe(NO3
)2
.
Calculate E°
cell for the spontaneous cell reaction at 25°C

Answers

Answer 1

The standard electrode potential value of a cell can be calculated from the reduction potentials of the electrodes. The standard electrode potential  E⁰ of the voltaic cell with Ni electrode and iron electrode is 0.19 V.

What is standard electrode potential?

The reduction potential of an electrode at standard conditions that is at 298 K and 1 bar pressure is called standard electrode potential.

There are two types of electrodes in a cell called cathode and anode. Cathode is the electrode at which reduction occur where as the electrode which undergo oxidation is called anode.

The standard electrode potential of a cell can be measured  as follows.

[tex]E^{0} _{cell} = E^{0} _{cathode} - E^{0} _{anode}[/tex]

Here, the anode is Fe electrode with a standard electrode potential  of -0.44 V and the anode is Ni electrode having -0.25 V reduction potential.

Thus the standard electrode potential of the voltaic cell can be calculated as follows:

[tex]E^{0} _{cell} = E^{0} _{Ni^{2+}/Ni} = E^{0} _{Fe/Fe^ {2+}}[/tex]

       = (-0.25 v) - (-0.44 v)

       = 0.19 V.

Hence, the standard electrode potential of the cell E⁰ containing Ni electrode and Fe electrode is 0.19 V.

To learn more about standard electrode potential, refer the link below:

https://brainly.com/question/14240930

#SPJ1


Related Questions

Among the following travelling objects, which has the shortest de Broglie
wavelength?
Hint. It is not necessary to calculate the wavelength for each object. The quickest
way to answer this question is to consider how the de Broglie wavelength depends
on the momentum (mass x speed).
ma
O
A Boeing 777 airplane (mass 2.5×105 kg) flying at a speed of 250 m/s (560 mph)
A bird of mass 2x10-2 kg flying at a speed of 10 m/s
A car of mass 2x10³ kg driving at a speed of 50 m/s
HADEMA kelaparas pasikei
E OS
KAMA MŪ
A person of mass 80 kg running at a speed of 3 m/s
A Neon atom (mass 3.4×10-26
danaume
para
kg) traveling at a speed of 3×10³ m/s

Answers

Among the following travelling objects, which has the shortest de Broglie wavelength, Neon atom (mass 3.4×10-26 kg) traveling at a speed of 3×10³ m/s.

What is de Broglie wavelength?

The de Broglie wavelength is an important term to understand when studying quantum mechanics. The de Broglie wavelength () is the wavelength () associated with an item in relation to its momentum and mass. The de Broglie wavelength of a particle is usually inversely related to its force.Matter is thought to have a wave-particle dual nature. De Broglie waves, named after the discoverer Louis de Broglie, are the characteristics of a material item that fluctuates in time or space while acting like waves. It is sometimes referred to as matter-waves. It is very similar to the dual nature of light, which has been empirically demonstrated to act as both a particle and a wave.

To learn more about de Broglie wavelength

https://brainly.com/question/15330461

#SPJ9

What volume of 0.130 M HClO4 solution is needed to neutralize 44.00 mL of 8.50×10−2 M NaOH ?

It wants the answer in mL.

Answers

The volume of 0.130M HClO₄ required to react with 44ml of  8.5 x 10⁻²M NaOH to neutralize it is 28.76ml.

Let us first write the reaction of HClO₄ and NaOH,

HClO₄ + NaOH → NaClO₄ + H₂O

According to the reaction,

one moles of HClO₄ reacts with one mole of NaOH completely to form NaClO₄ and H₂O.

As we know,

Molarity = number of moles of solute/volume of solution

Moles = Molarity x Volume

So, we can write,

Moles of HClO₄ = Moles of NaOH

V x 0.130 = 44 x 8.5 x 10⁻²

Here,

V is the volume of HClO₄ (in ml),

V = 44 x 8.5 x 10⁻²/0.130

V = 28.76ml

Amount of HClO₄ required is 28.76ml.

To know more about molarity, visit,

https://brainly.com/question/14469428

#SPJ9

What is the z value for calcium atom with 35neutrons?

Answers

The atomic number of calcium i.e. Z value is 20 with 35 neutrons and 20 electrons.

What is atomic number?

Atomic number is defined as a chemical element's nuclear charge number (symbol Z) is the charge number of an atomic nucleus.
It can also be defined as  the number of protons or positive charges in the nucleus of an atom of a specific element, and thus the number of electrons generally surrounding the nucleus.

The number of protons is equal to number of number of electrons.

Thus. the atomic number of calcium i.e. Z value is 20 with 35 neutrons and 20 electrons.

To learn more about atomic number, refer to the link below:

https://brainly.com/question/8834373

#SPJ1

What is the mass (in grams) of 19.00 L of propane vapor (C₃H₈) at STP?

Answers

Considering the definition of STP conditions and molar mass, there are 37.3208 grams of 19.00 L of propane vapor (C₃H₈) at STP.

Definition of STP conditions

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

Definition of molar mass

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

Mass of propane

In this case, you have 19.00 L of propane vapor (C₃H₈) at STP.

You can apply the following rule of three: if by definition of STP conditions a volume of 22.4 L is occupied by 1 mole of propane, a volume of 19 L is occupied by how many moles of propane?

moles of propane= (19 L× 1 mole)÷ 22.4 L

moles of propane= 0.8482 moles

Considering that the molar mass of propane is 44 g/mole, you can apply the following rule of three: If 1 mole of propane contains 44 grams, 0.8482 moles contains how much mass of propane?

mass of propane= (0.8482 moles× 44 grams)÷ 1 mole

mass of propane= 37.3208 grams

Finally there are 37.3208 grams of propane in 19 L.

Learn more about STP conditions:

brainly.com/question/3773297

brainly.com/question/9901446

brainly.com/question/12695086

brainly.com/question/15507610

brainly.com/question/14260169

brainly.com/question/14831640

#SPJ1

H₂Se
# of Valence e" =
Lewis Structure:
Draw the Molecular Geometry
(using dashes and wedges):
Se
of e Groups =
Hybridization =
Electronic Geometry:
Molecular Geometry:
Polar or Nonpolar?

Answers

the correct answer is electrons

The equilibrium constant for the reaction 2 HF (g) ⇌ H₂ (g) + F₂ (g) is 0.270 at a particular temperature. What is the equilibrium constant for the equation ½ H₂ (g) + ½ F₂ (g) ⇌ HF (g)?

Answers

If the equilibrium constant for the reaction 2 HF (g) ⇄ H₂ (g) + F₂ (g) is 0.270 than equilibrium constant for the equation ¹/₂ H₂ (g) + ¹/₂ F₂ (g) ⇄ HF (g) is 1.924.

Initial equation is 2 HF (g) ⇄ H₂ (g) + F₂ (g)

Final equation is ¹/₂ H₂ (g) + ¹/₂ F₂ (g) ⇄ HF (g)

On reversing the equation of reaction, the equilibrium constant of the reversed reaction is inverse of the equilibrium constant of the forward reaction.

For reaction H₂ (g) + F₂ (g) ⇄ 2HF (g), equilibrium constant will be inverse of 0.270. Let the equilibrium constant of reaction  H₂ (g) + F₂ (g) ⇄ 2HF (g) be K₁. Then, the Value of K₁ is given as

K₁ = 1 ÷ 0.270 = 3.7037

On changing the stoichiometric coefficient by a factor let's say x, then the equilibrium coefficient of the changed reaction is the equilibrium constant of the unchanged reaction raised to the power x.

According to the question, the value of x is ¹/₂. So, the equilibrium constant of reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g), will root of K₁. Let the equilibrium constant of the reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g) be K₂. Then, the value of K₂ can be given as

K₂ = √K₁

K₂ = √3.7037

K₂ = 1.924

Hence the value of the equilibrium constant for the final reaction ¹/₂ H₂ (g) + ¹/₂ F₂ ⇄ HF (g) is 1.924

Learn about what different factors does equilibrium constant depends on at:

https://brainly.com/question/15097297

#SPJ1

Perform the following operation
and express the answer in
scientific notation.
5.0×10−5 +2.0×10-4
[ ? ]×10

Answers

The answer in scientific notation for the following operation is 2.5 × 10⁻⁴

What is scientific notation?

It is a way of writing very large or very small numbers. A number is written in scientific notation when  number between 1 and 10 is multiplied by  power of 10.

To determine the power or exponent of 10,

we must follow the rule listed below:

The base should be always a 10The exponent must be non-zero integer that means it can be either a positive or negative Coefficients can be positive or negative numbers including whole and  a decimal numbers

5.0×10⁻⁵ + 2.0×10⁻⁴

= 5×10⁻⁵ + 2×10⁻⁴

= [tex]\frac{5}{10^{5} } + \frac{2}{10^{4} }[/tex]

= [tex]\frac{5}{100000} + \frac{2}{10000}[/tex]

= 0.00005 + 0.0002

= 0.00025

= [tex]\frac{2.5}{10000}[/tex]

= [tex]\frac{2.5}{10^{4} }[/tex]

= 2.5 × 10⁻⁴

Learn more about scientific notation at https://brainly.com/question/1767229

#SPJ13

Calculate the mass of NaCl in 450g of NaCl solution containing NaCl w/w%

Answers

Answer:

MM of Nacl is 58.5

1000=450

58.5=26.325g

3. The element with electronic configuration 2.8.6 *

Answers

To know the element with eletronic configuration 2.8.6 we need to:

First:

do the eletronic distribution - 1s² 2s² 2p⁶ 3s² 3p⁶

Calculate the number of molecules of sugar present in 1 mL of 10% sugar solution having a density of 1.2 g

Answers

Molar mass - Number of Sugar molecules in 1mL of 10% sugar solution is 2.11 × 10²⁰


What is molar mass ?
Mass
per mole is a definition of molar mass. In other terms, molar mass is the total mass of all the atoms in a substance that makes up a mole. It is measured in gram-per-mole units.
For elements or molecules, molar mass is displayed. The molar mass is simply the element's mass represented in atomic mass units in the case of single elements or individual atoms. To put it another way, an atom's atomic mass and molar mass are exactly equal. Molar mass can be used to determine a particle's identification because it is equivalent to atomic mass for individual atoms.

Molar mass of sugar (C₁₂H₂₂O₁₁) = (12×12 + 1×22 + 16×11) g mol⁻¹ = 342 g mol⁻¹

Mass of 1 ml of the solution = (1 ml) × (1.20 g ml⁻¹) = 1.20 g

Mass of sugar in 1 ml of the solution = (1.20 g) × 10% = 0.120 g

Moles of sugar in 1 ml of the solution = (0.120 g) / (342 g mol⁻¹) = 3.509 × 10⁻⁴ mol

Avogadro constant = 6.02 × 10²³ mol⁻¹

No. of sugar molecules = (3.509 × 10⁻⁴ mol) × (6.02 × 10²³ mol⁻¹) = 2.11 × 10²⁰

No. of Sugar molecules in 1mL of 10% sugar solution is 2.11 × 10²⁰


To learn more about Molar Mass from given link
https://brainly.com/question/837939
#SPJ10


A sample of neon gas occuples a volume of 7.5L at 35 °C. If the temperature is increased to 45°C, what is the new volume? K=273+•C

Answers

Assuming the pressure remains same, we can use Charles' Law here

i.e.

[tex]\frac{V1}{T1}=\text{ }\frac{V2}{T2}[/tex]

Here, V1 = 7.5 l, T2 = 35 +273= 308 K

T2= 45+273 = 318 K, we need to find V2

[tex]\frac{7.5}{308}=\text{ }\frac{V2}{318}[/tex][tex]So,\text{ V2 = 7.74 L}[/tex]

Particle X has 16 protons, 17 neutrons and 18 electrons. Particle X

an atom of a metal
an atom of a noble gas
an anion
a cation

Answers

X is Sulfur because S has 16 protons and since it has more electrons than the number of protons the charge is negative, which means it’s an anion.

Convert 1.54 x 10^25 molecules of water into moles.

Answers

The moles of water = 0.25×[tex]10^{2}[/tex]

Given Molecules= 1.54×[tex]10^{25}[/tex] molecules

Avogadro number = 6.02×[tex]10^{23}[/tex] molecules

Number of Moles= Number of Molecules ÷ Avogadro Number

Number of moles = 1.54×[tex]10^{25}[/tex]÷6.02×[tex]10^{23}[/tex]

                             = 0.25×[tex]10^{2}[/tex] moles

Therefore number of moles are 0.25×[tex]10^{2}[/tex] moles

For further information regarding the topic Moles and Molecules refer to the following link

https://brainly.com/question/19964502

Determine the mass of water formed when 12.5 L NH 3 (at 298 K and 1.50 atm) is reacted with 18.9 L of O 2 (at 323 K and 1.1 atm).

4 NH 3( g) + 5 O 2( g) → 4 NO( g) + 6 H 2O( g)

Answers

16.93g of water formed when 12.5 LNH3 (at 298 K and 1.50 atm) is reacted with 18.9 L of O2 (at 323 K and 1.1 atm).

What is water in chemistry?

The primary component of Earth's hydrosphere and the fluids in all known living things is water (H2O), an inorganic chemical that is transparent, tasteless, odorless, and almost colorless (in which it acts as a solvent).

Despite not providing food, energy, or organic micronutrients, water is necessary for all known forms of life. Each of its molecules has one oxygen and two hydrogen atoms, which are connected by covalent bonds, as indicated by the chemical formula H2O. At a 104.45° angle, the hydrogen atoms are joined to the oxygen atom.

We will use the idea gas equation to calculate the moles of NH3 and O2

that  is  Pv= n RT

where;  P= pressure,  

V=  volume,

n = number  of  moles,

R=gas   constant  = 0.0821  l .atm/ mol.K

can also be written as

n =  PV /RT

The   moles of NH3

n= (1.50 atm  x 12.5 L) /(  0.0821 L. atm /mol.k   x 298 K)  = 0.766  moles

The  moles  of  O2

=(1.1 atm  x 18.9  L) /  (  0.0821 L. atm/ mol.k   x 323 K) = 0.784  moles

Now we will write the reaction between NH3 and O2

4 NH3  + 5 O2  → 4 No  +6H2O

from equation above 0.766 moles of NH3 reacted to produce  

0.766 x 6/4 =1.149 moles of H2O

0.784  moles of O2  reacted to produce

0.784 x 6/5 = 0.9408 moles of H20

As we can see O2 is totally consumed, O2  is the limiting reagent and therefore the moles of H2O produced = 0.9408  moles

Mass  of  H2O  = moles x molar mass

Molar mass  of H2O  =  (1 x2)+16= 18  g/mol

mass = 18 g/mol  x 0.9408  moles

         = 16.93  grams

Thusm 16.93g of water formed when 12.5 L NH 3 (at 298 K and 1.50 atm) is reacted with 18.9 L of O 2 (at 323 K and 1.1 atm).

Learn more about water

https://brainly.com/question/1313076

#SPJ9

a gas is contained in a thick walled ballon when the pressure changes from 417mm HG 576mm HG the volume changes from to 4.78L and the temputure changes from 4.78 and the tempurture 497 50 386

Answers

The volume of the gas will be 8.501 L

What is combined gas law?

The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.

i.e.

                                   P1V1/T1 = PV2/T2

Where P1 = Initial pressure

V1 = Initial volume

T1 = initial temperature

P2 = Final pressure

V2 = Final volume

T2 = Final temperature

In the question, we know

 P1V1/T1 = PV2/T2

417 × V1  = 576 × 4.78

   497             386

417 × 386 × V1 = 576 × 4.78 × 497

V1 = 576 × 4.78 × 497

            417 × 386

V1 = 8.501 L

To know more about combined gas law visit the link:

https://brainly.com/question/13154969?referrer=searchResults

#SPJ1

The complete question is :

When the pressure changes from 417 mm Hg to 576 mm Hg, the volume changes from _______L to 4.78 L and the temperature changes from 497 K to 386 K.

Oxidation state for FeAl2(SO4)4*22(H2O)

Answers

The oxidation state of SO4 in FeAl2(SO4)4 * 22 H2O is -2 .

What is oxidation state and how the oxidation state of S04 comes out to be so?Oxidation state of an element is the collection of all charges an element possess in a compound.Here the oxidation state of Fe would be taken as +2, oxidation state of Al would be taken 3, and H2O's oxidation state would be 0.Putting the values , like 2+3x2+4x = 0 , then x would be calculated out to be -2.Hence the oxidation state of SO4 in FeAl2(SO4)4*22H2O would be -2 as followed by all the oxidation states of the element in the compound  when put the values.

To know more about oxidation state visit:

https://brainly.com/question/11313964

#SPJ10

Help
- Correct answer to multiple choice = marked, rated to max& thanked

Answers

95 is the answer to your question because 40kpa

Chromium has three naturally-occurring isotopes. It is 80% Chromium-52, 14% Chromium-53, and 6% Chromium-51. What is the average atomic mass?520.80 amu 5208 amu 52.08 amu 79.62 amu
PLEASE HELP

Answers

The average atomic mass of chromium with three isotopes is 52.08amu (option C).

How to calculate average atomic mass?

Average atomic mass is the weighted average of the atomic masses of the naturally occurring isotopes of an element.

The average atomic mass of an isotopic element can be calculated as follows:

80% Chromium-5214% Chromium-536% Chromium-51

Average atomic mass = (80% of 52) + (14% of 53) + (6% of 51)

Average atomic mass = 41.6 + 7.42 + 3.06

Average atomic mass = 52.08amu.

Therefore, 52.08amu is the average atomic mass of the chromium isotopes.

Learn more about isotopes at: https://brainly.com/question/1853460

#SPJ1


Which statement best describes the mass numbers of the atoms in the reaction?


OThere is one atom with a mass number of 1

O There are two atoms with mass numbers of 2.

OThere is one atom with a mass number of 2.

O There are two atoms with mass numbers of 1.

Answers

There are two atoms with mass numbers of 2 best describes the mass numbers of the atoms in the reaction

What is a Mass number ?

The sum of protons and neutrons in an atomic nucleus is known as the mass number, often known as the atomic mass number or nucleon number. It roughly equates to the atom's atomic mass given in atomic mass units.

They are collectively referred to as nucleons since protons and neutrons are both present in the atomic nucleus. An atom of carbon, for instance, has 6 protons and 6 neutrons. Its mass number is therefore 12. All atoms of an element have the same number of protons, but their neutron counts can differ.

Learn more about Mass number here:

https://brainly.com/question/28409714

#SPJ13

If 6.95 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 ——- CO2 + H2OHow many moles of O2 is required? Answer in units of mol.

Answers

Answer

24.325 mol

Explanation

The unbalanced equation is:

C₂H₆ + O₂ → CO₂ + H₂O

The balanced equation will be:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

Given mole of ethane = 6.95 mol

From the balanced equation:

2 mol of C₂H₆ is required by 7 mol of O₂

Therefore, 6.95 mol of C₂H₆wills requir:

[tex]\frac{6.95\text{ mol }C_2H_6\times7\text{ mol }O_{2}}{2\text{ mol }C_2H_6}=24.325\text{ mol of }O_{2}[/tex]

Hence, 24.325 mol of O2 is required.

Which types of orbitals are found in the principal energy level n=2?

Answers

The kind of orbitals precisely found in the principal energy level n=2 are the one 2s orbital and three 2p orbitals

Why the n=2 orbital has four orbitals?

It follows that in the electronic configuration of elements describes the distribution of electrons of elements is shared into different energy levels through the orbitals.

In the second orbital, there are actually four different types of orbitals which are found here, these are:

The one 2s orbitalThe three 2p orbitals.

The position of elements in the periodic table is largely based on the shared electrons of atoms which are being technically distributed at various level.

An element is a substance which cannot be split into different forms by ordinary means. Electrons revolve around the orbits of atoms of elements.

So therefore, from the given explanation above, it can be deduced that the the second energy level has four different orbitals.

Read more on energy:

https://brainly.com/question/166559

#SPJ1

When the equation, ___O2 + ___C 6H 14 →→ ___CO2 + ___H2O is balanced, the coefficient of O2 is:

Answers

Answer:

Explanations:

For a chemical reaction to be balanced, the total number of moles of elements at the reactant must be equal to the number of moles at the product.

Given the chemical reaction;

[tex]aO_2+bC_6H_{14}\rightarrow cCO_2+dH_2O[/tex]

Equating the number of moles of elements on both sides:

For the oxygen element:

2a = 2c + d ................... 1

For the carbon element;

6b=c

For the Hydrogen element:

14b = 2d

7b = d .............................. 3

Assume a = 2;

Equation 1 becomes:

2(2) = 2c + d

4 = 2c + d ................,....4

From equation 2

b = c/6 .............................. 5

From equation 3:

b = d/7 ...................... 6

Equating 5 and 6

c/6 = d/7

7c = 6d

c = 6d/7 ........................... 7

Substitute equation 7 into 4 to have:

4 = 2c + d

4 = 2(6d/7) + d

4 = 12d/7 + d

4 = (12d+7d)/7

28 = 19d

d = 28/19

To get the value of b:

b = d/7

b = 28/19 * 1/7

b = 28/133

A piece of barium has a volume of
4.00 cm3. The density of barium
is 3.62 g/cm3. What is the mass
of the sample of barium?
mass = [?] g
Record your answer to the hundredths place.
Mass (g)

Answers

Based on the volume and density of the barium sample, the mass

of the sample of barium mass  14.48 g.

What are the relationship between mass, volume, and density?

The mass of a substance is the quantity of matter present in a substance.

The unit of mass is kg.

The volume of a substance is the amount of space covered by the substance. The unit for volume is a liter, cubic meter, or cubic centimeter.

The density of a substance is the ratio of the mass and volume of that substance.

Density = mass / volume

The mass of the barium sample is calculated as follows:

The volume of the sample of barium = 4.00 cm³

The density of barium is 3.62 g/cm³

The mass of a substance = density * volume

mass of the barium sample = 4.00 cm³ * 3.62 g/cm³

Mass of the barium sample = 14.48 g

Learn more about mass and density at: https://brainly.com/question/1354972

#SPJ1

Determine the molecular/formula masses of the following compound. Round the masses of the element from the periodic table to the nearest tenth of a gram Th(SO4)2

Answers

The question requires us to determine the molecular mass of the compound thorium sulfate (Th(SO4)2), considering the atomic masses to the tenth of a gram.

The atomic masses of the elements present in the molecule given are:

Th: 232.0 u

S: 32.1 u

O: 16.0 u

To obtain the molecular mass of the compound, we must consider the number of atoms of each element: there are 8 oxygen (O) atoms, 2 sulfur (S) atoms and 1 thorium (Th) atom, therefore we calculate the mass as:

molecular mass Th(SO4)2 = (1 * 232.0) + (2 * 32.1) + (8 * 16.0) = 424.2 g/mol

Therefore, the molecular mass of Th(SO4)2 is 424.2 g/mol.

Find the energy in kJ for an x-ray photon with a frequency of 2.4 X 1018 s-1.

Answers

The energy for the x-ray photon is 1.619x10⁻³³ kJ.

Describe energy.

The quantitative characteristic that is conveyed to a body or to a physical system in physics is called energy. Energy can be observed in the performance of labor as well as in the form of heat and light. Energy is a limited resource that can only be changed from one form to another and cannot be created or destroyed, in accordance with the principle of energy conservation.

The SI's (International System of Units) unit of energy measurement is the joule (J). Common types of energy include the kinetic energy of a moving object, the potential energy of a stationary object, the elastic energy of a stationary object, the chemical energy associated with chemical reactions, the radiant energy of electromagnetic radiation, and the internal energy of a thermodynamic system.

Given, frequency of photon (v) = 2.4x1018 s⁻¹

Planck's constant (h) = 6.63x10⁻³⁴ J s

Energy (E) = h x v = 6.63x10⁻³⁴ x 2.4x1018

                 = 1.619x10⁻³⁰ J

                 = 1.619x10⁻³³ kJ

Hence, the energy for the x-ray photon with a frequency of 2.4x1018 s⁻¹ is 1.619x10⁻³³ kJ.

To know more about energy, click on the link

https://brainly.com/question/2003548

#SPJ10

A map showing the acidity of rain across the United States is provided. The pattern of acid rain is best explained by which of the following observations?

Answers

The patterns of acid rain is best explained on the basis of it's ph observations.

Rain or any other form of precipitation that is unusually acidic, is referred to as acid rain (low pH). The Northeastern United States contains the regions with the highest levels of acidity (lowest pH values). The Northeast's concentration of industrial and power facilities, numerous cities, and dense population are to blame for this trend of high acidity.

Infrastructure, marine life, and plants can all be harmed by acid rain. Sulfur dioxide and nitrogen oxide emissions cause acid rain by reacting with the water molecules in the atmosphere to create acids. It has been noted that acid rain also has negative effects on forests, freshwaters, and soils. It also kills insect and aquatic life-forms, damages structures, and has an effect on human health.

To know more about acid rain, refer to the following link:

https://brainly.com/question/22143130

#SPJ1

A new element (E) has been discovered to have two naturally occurring isotopes, E216 and E
219. If the average isotopic mass of E is 217.00 grams/mol, what is the percent abundance of each isotope?

I need help please?

Answers

Let the percent abundance of E216 be x. Then, the percent abundance of E219 is 100-x. It follows that:

[tex]216x+219(100-x)=2170.00\\\\216x+21900-219x=21700.00\\\\-3x+21900=21700.00\\\\-3x=-200\\\\x=\frac{200}{3} \approx 66.6\%[/tex]

So, the percent abundance of E216 is 66.6%, and the percent abundance of E219 is 33.3%.

Isotopes exists atoms that stood part of the exact element and have the same atomic number Z but a different mass number A. The percent abundance of E216 exists 66.6 %, and the percent abundance of E219 exists 33.3 %

What is meant by isotope?

Isotopes are two or more different atom types that share the same atomic number and place in the periodic table but contain various quantities of neutrons in their nuclei, resulting in various nucleon numbers.

A chemical element's isotope is any of two or more species of atoms that share the same atomic number, position in the periodic table, and virtually identical chemical behavior, but differ in atomic mass and physical characteristics. There are one or more isotopes for each chemical element.

Isotopes are atoms that are part of the same element and have the same atomic number Z but a different mass number A. For instance, three isotopes of the element carbon, with respective masses of 12, 13, and 14, are carbon-12, carbon-13, and carbon-14.

Let the percent abundance of E216 be x. Then, the percent abundance of E219 is 100-x. It follows that:

216x + 219 (100 - x) = 2170.00

simplifying the above equation, we get

216x + 21900 - 219x = 21700.00

-3x + 21900 = 21700.00

-3x = -200

x = 200/3 ≈ 66.6 %

Therefore, the percent abundance of E216 exists 66.6 %, and the percent abundance of E219 exists 33.3 %.

To learn more about Isotopes refer to:

https://brainly.com/question/364529

#SPJ13

how will you relate the melted ice cream because of the heat of the sun
to magmatism

Answers

As the liquid rock solidifies, it loses its heat to the surrounding crust. Much like hot fudge being poured over cold ice cream, this transfer of heat is able to melt the surrounding rock (the “ice cream”) into magma.

1.)What do you call a way of acquiring knowledge through experiment?

a.Academic method C.Scientific method

b.Experimental method d.Scietific notation

2.)What is the first method you must do in order to make a research theory?

a.Share the results c.Observe and question

b.Analyze and conclude d.Formulate a hypothesis

3.)Which of the following is the MOST important trait in the first step of scientific method,observe and question?

a.Senses C.Teamwork

b.Mathematical Formula d.Scientific Values

4.)What is the last step you must do in order to make a research theory?

a.Share the results c.Observe and question

b.Analyze and conclude d.Formula and a hypothesis

5.)Which of the following traits must you AVOID in making and analyzing a conclusion?

a.Be objective c.Be biased

b.Be sensible d.Include scientific values ​

Answers

Answer: B,C,not sure,A,C

Explanation:

Nitrogen is collect over water at 40 Celsius . The partial pressure due to water vapor is 7.38 kPA at 40 Celsius , what is the partial pressure of nitrogen if the total pressure is 99.42 kPa?

Answers

There is a partial pressure for each gas in a mixture of gases, which is the pressure that would exist if that gas alone filled the whole volume of the initial combination at the same temperature.

One of two methods can be used to compute partial pressures:

Use PV = nRT to calculate the individual pressure of each gas in a mixture.

Utilizing the mole fraction of each gas, determine the proportion of pressure from the total pressure that may be ascribed to each individual gas.

When attempting to predict gas movement, partial pressure must be taken into account. Recall that the pressure of gases usually equalizes across nearby locations. From one area with a greater partial pressure to another with a lower partial pressure, a gas will move.

By dividing the mole fraction by the total pressure of a gas, one can calculate its partial pressure. Since it is based solely on the quantity of particles present rather than the nature of the gas, the Ideal Gas Equation remains true for mixes of gases just as it does for pure gases.

To learn more about partial pressure from given link

https://brainly.com/question/16118479

#SPJ9

Other Questions
It's the image that's attached 1. A patient is prescribed 80 MG of tramadol hydrochloride injection the sock does a 50 MG/2 ML what volume are you require2. A laboratory technician measures 48 ML of urine sample in a 4 ounce beaker. How many more ML of urine are necessary to fill the beaker? 3. You fill a storage cabinet with 12 bottles of normal saline. Each bottle contains 1000 ML. how many ounces of dissolution are in the storage cabinet?4. A patient is prescribed six MG of cough medicine. The label on the prescription says there are two MG per 4 ML how many tablespoons of cough medicine does the patient need to take?5. A patient requires 80 mg of risperidone. The stock dose is 40 MG/10 ML what volume is required? 6. Normal Urinary output for an adult is between 400 to 2,000 ml daily. If a person follows the recommended eight glasses of 8 ounces of fluid intake that has an output of a 1500 ML, what is the net liquid gain/loss?7. Dymelor 0.75 g is ordered. Scored tablets are labeled to 500 MG each. How many tablets will you give? Please help!! someone who must decide whether to receive $100 now or $100 one year from now will probably choose , since there is a(n) in waiting to use the money. How does locoweed keep from poisoning itself? A car travels at 15 m/s for 10,0s. It speedsup with an acceleration of 0.2 M/S for 15.0 s. At theend of this time What is its velocity? Determine if the function below is continuous.A. not continuous, >2 holesOB. not continuous, 1 holeOC. not continuous, 2 holesOD. continuousReset Selection A fact about social support networks Water, table salt, and tin metal are all pure substances. Which of these pure substances are compounds Changes in behavior and cognitive processes over time are studied by _____. changes in behavior and cognitive processes over time are studied by _____. evolutionary genetcists evolutionary psychologists behavioral psychologists behavioral geneticists an investor notices that a company is paying a cash dividend to its stockholders and that today is the record date on which an investor must own the stock to be entitled to the distribution. what means of settlement could the investor use to receive the dividend? a regular-way b buyer's option c cash d when issued Speed is calculated by the equation S = d/t, where S = speed, d = distance, and t = time travelled. For what amount of time (in hours) did a car travel if its speed was 75 miles per hour and it travelled a distance of 187.5 miles? Can someone help me with this open response question???How did the federal governments policies towards the freedmen change from the Reconstruction years to the 1880s and 90s? What worked and what didnt? Illustrate. Pls help me with all of this I will give a lot of points away pls complete all the sentences plsssssssssss god bless you What is one of the most important transformations for Virginia after Bacon's Rebellion?A) Governor Berkeley will be put in jail and eventually hung B)Virginia will begin to become a slave colony, importing large numbers of African slaves C)Native people and the colonists will sign a treaty of mutual respect D)Bacon becomes the new governor PLEASE HELP ME I NEED HELP What is the surface area of the cube below?A. 96 unitsB. 120 unitsC. 64 unitsD. 80 units which one of edwin hubbles findings support the big bang theory Given the right DEF, DE = 30, EF = 72 and DF = 78. Find the cos F= Match the terms with the correct definitions. 1. Taking a deep breath Signals the brain to calm down 2. External stressor 1 A person enters a deep state of relaxation 3. During meditation A sense of pessimism 4. Internal stressor Conflict with coworkers Gross Income 3 Ted gets paid a monthly salary of $5,000 and receives 6% commission on all sales over $8000. 1 point Which of the following is an equation that can be gross income? y = 5000+ 6(x - 8000) y = 5000+.06 (x - 8000) y = 8000 +.06 (x - 5000) O y = 5000+.06 (8000 - 2) Previous 3 4