The compound would have higher ionic character if the difference in electronegativity between the atoms is higher.
Electronegativity is a property that explains the tendency of an atom to attract more electrons from other compounds to itself which would result in bond formation. If the attraction or electronegativity is higher, it results in ionic bond between the atoms. This is called ionic character.
We can also say that the ionic character would be high if the covalent character is less in a compound.
Thus, higher electronegativity between shared electrons between atoms and less covalent character in a compound would help us identify the compounds with higher ionic character.
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Which is an example of radioactivity that occurs when a neutron is converted to a proton and an electron is emitted from the nucleus?
answer: emission of a BETA particle
An example of radioactivity that occurs when a neutron is converted to a proton and an electron is emitted from the nucleus and emission of a beta particle
Radioactivity is the phenomena in which spontaneous disintegration of unstable atomic nuclei to form more energetically stable atomic nuclei and radioactive decay is the highly exoergic and radioactivity that occurs when a neutron is converted to a proton and an electron is emitted from the nucleus and emission of a beta particle and beta particle is emitted by radioactivity by conversion of neutron to proton and fast moving electron and radioactive decay by the loss of an electron from the nucleus
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liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . suppose 43. g of hexane is mixed with 85.1 g of oxygen. calculate the maximum mass of water that could be produced by the chemical reaction. round your answer to significant digits.
The mass of water produced is 35.27g in the given chemical reaction.
A chemical reaction is the chemical change of one set of chemical components into another. A chemical reaction is the process through which two or more molecules combine to create a new product(s). Compounds that combine to make new compounds are referred to as reactants, while the newly produced compounds are referred to as products. When chemical bonds between atoms are established or destroyed, chemical reactions occur. Breaking chemical bonds between reactant molecules and establishing new bonds between atoms in product particles are examples of chemical reactions. The number of atoms is the same before and after the chemical transition, but the number of molecules changes.
Balanced equation:
[tex]2C_6H_{14} + 19O_2 \rightarrow 12CO_2 + 14H_2)[/tex]
Given:
Mass of hexane = 43g
Mass of oxygen = 85.1g
To find:
Mass of water formed = ?
Calculations:
According to the balanced equation, 2 moles of hexane react with 19 moles of oxygen to form 12 moles of carbon dioxide and 14 moles of water.
Molar mass of hexane = 86.118g/mol
Molar mass of oxygen = 32g/mol
(2 x 86.118)g of hexane required = (19 x 32)g of oxygen
43g of hexane required = (19 x 32) / (2 x 86.118) x 43
= 151.79g of oxygen
But we have only 85.1g of oxygen, thus it is a limiting reagent
Now,
(19 x 32)g of oxygen reacts to produce = (14 x 18)g of water
85.1g of oxygen reacts to produce = (14 x 18) / (19 x 32) x 85.1
= 35.271g of water
Result:
35.27g of water is produced.
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What is the difference between a controlled, dependent, and independent variable in
an experiment?
A controlled variable is one that is constant and is unchanged in an experiment. It is held constant in order to observe the result of the independent variable.
An independent variable is the variable that is being changed in the experiment in each trial, while a dependent variable is the one that is being measured.
What does "group" mean in the Periodic System?
Answer:
A column in the periodic table of the chemical elements.
Answer:
A group is the arrangement of elements vertically, in the periodic table. It can be determined by the number of valence electrons present in the atom.
a 0.458 g sample of khp (molar mass 204.22 g/mol) is titrated to a pink phenolphthalein endpoint with 12.84 ml of a naoh solution. what is the concentration of the solution?
0.175M is found to be the concentration of the solution from the given titration reaction.
The idea of concentration is one that is frequently utilized in chemistry and related domains. It is a measurement of how much of one substance is diluted with another.
A chemical species' concentration in a solution, specifically the quantity of a solute per unit volume of solution, is measured by its molar concentration.
Given:
Weight = 0.458g
Volume = 12.84mL
Molecular weight = 204.22g/mol
To find:
Concentration = ?
Formula:
Concentration = no. of moles / volume
Calculations:
No. of moles = weight given / molecular weight
No. of moles = 0.458 / 204.22g/mol
No. of moles = 2.242 x [tex]10^{-3}[/tex] mol
Concentration = 2.242 x [tex]10^{-3}[/tex] / 12.84mL
Concentration = 0.175M
Result:
The concentration of the given solution is found to be 0.175M
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consider the given balanced equation. c 3 h 8 5 o 2 ⟶ 3 c o 2 4 h 2 o how many moles of carbon dioxide are formed when 3 moles of propane ( c 3 h 8 ) react? select one: 12 4 3 9
Based on the balanced reaction equation, 9 moles of carbon dioxide are formed when 3 moles of propane are combusted.
From the balanced reaction equation we can see that 3 moles of carbon dioxide are formed upon the combustion of a single mol of propane:
C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
These molar ratios are constant and enable us to set up a simple proportion:
1 mol of propane : 3 mol of carbon dioxide = 3 mol of propane : X
X = 3 mol of carbon dioxide * 3 mol of propane / 1 mol of propane
X = 9 mol of carbon dioxide
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Why is it important that we are very careful in how much acid is added to neutralize the reaction?.
Mixing an acid and a base does not necessarily neutralize them. Neutralization refers to the situation where equal parts of acid and base are mixed.
If equal parts of a strong acid and a strong base are mixed, the pH of the resulting solution will be very close to 7 depending on factors such as temperature. However, if a strong base is used to neutralize a weak acid the resulting solution will have a pH greater than 7 basic and if a weak base is used to neutralize a strong acid, the resulting pH will be less than 7.
It is therefore not entirely correct to say that all acid-base reactions are examples of neutralization only those where acids and bases are mixed in stoichiometrically equal amounts. Hazardous material spills must be absorbed, neutralized, or controlled in the event of an accident to ensure workplace safety. Neutralization of acids and bases allows for safer handling of spills and reduced disposal costs.
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Which element has the following electron configuration? 1s^2 2s^2 2p^2 3s^2 3p^6 4s^2 3d^10 4p^5
aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . suppose 37. g of hydrobromic acid is mixed with 8.28 g of sodium hydroxide. calculate the minimum mass of hydrobromic acid that could be left over by the chemical reaction. be sure your answer has the correct number of significant digits.
Answer: 26g
Explanation:
First, write the correctly balanced equation for the reaction taking place:
HBr(aq) + NaOH(s) ==> NaBr(aq) + H2O(l) ... balanced equation
Next, find out which reactant is limiting. An easy way is to just divide the moles of each reactant by the corresponding coefficient in the balanced equation (1 for both in this case):
HBr: 46.1 g HBr x 1 mol HBr / 80.9 g = 0.570 moles
NaOH: 10. g NaOH x 1 mol NaOH / 40. g = 0.25 mols NaOH
NaOH is limiting and will determine the maximum amount of product that can form.
Maximum amount of NaBr that can form:
0.25 mols NaOH x 1 mol NaBr / 1 mol NaOH x 103 g NaBr / mol = 25.75 g NaBr = 26 g NaBr (2 s.f.)
Consider the balanced reaction 6 A(aq) + 7 B(aq) → 7 C(s) + 6 D(g) and the molar masses provided in the table below. Compound Molar Mass (g/mol) A 27.97 B 62.49 C 22.01 D 39.31 Suppose that 4.0 L of a 0.20 M solution of A is mixed with 3.0 L of a 0.20 M solution of B. The given reaction then proceeds to completion in the container. How many grams of C are theoretically obtainable? Report your answer to three decimal places (ignore significant figures).
The theoretical yield of C that is obtained is 13.26 g.
What is the theoretical yield?We know that the theoretical yield has to do with the amount of the substance that is obtained as we can get it from the stoichiometry of the balanced reaction equation. Hence the first step that we have to carry out is to try to obtain the balanced reaction equation that can be used to describe the reaction as it has been shown.
The balanced reaction equation is;
6 A(aq) + 7 B(aq) → 7 C(s) + 6 D(g)
Number of moles of A = 4.0 L * 0.20 M = 0.8 moles
Number of moles of B = 3.0 L * 0.20 M = 0.6 moles
Now;
6 moles of A reacts with 7 moles of B
0.8 moles of A reacts with 0.8 moles * 7 moles/6 moles
= 0.93 moles
Thus B is the limiting reactant.
If 7 moles of B yleds 7 moles of C
Amount of C obtained = 0.6 moles
Mass of C obtained = 0.6 moles * 22.01 g/mol
= 13.26 g
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The addition of ice at the end of the heating process is important because it:
A. Reacts with excess salicylic acid
B. Warms the solution slightly
C. Increases the solubility of the aspirin product
D. Reacts with excess acetic anyhdride
The addition of ice at the end of the heating process is important because it increases the solubility of the aspirin product.
What is heating process and why is it needed to add ice at the end of the heating process?Heating process simply denotes to the the process of heating out the products by the release of energy.The addition of ice is always essential when heat becomes so explosive and irresistive.Now here in this question, at the end of the heating process ice is added to increase the solubility.We often bring heat to the product for its better solubility, as in here heat is added for the same purpose.So the ice is added to increase the solubility of the aspirin product.To know more about heating process visit:
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perfect gas is a hypothetical gas in which the volume of the individual atoms (molecules) is negligible compared to the total volume of the container.
Perfect gas is a hypothetical gas in which the volume of the individual atoms (molecules) is negligible compared to the total volume of the container is true.
For a gas to be ideal, it has to follow the following rules.
The volume of molecules of a Perfect gas also known as an ideal gas has to be almost negligible as compared to the volume of the container.
The molecules do not attract or repel each other. They hardly collide with other in an elastic collision. This elastic collision also happens with the wall of the container.
So according to the first rule, the volume of individual molecules is negligible as compared to the the total volume of the container.
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A student is told that both energy and mass must be conserved in every chemical reaction. She measures the mass of Hydrochloric acid and a zinc strip separately. She then places the zinc strip into the acid and bubbles form as the zinc looks like it disappears. The combined mass afterward is less than the original.
Which of these can explain this result?
The bubbles indicate that a gas is created and mass is lost as it escapes from the container.
Why stduent is told that the both energy and the mass must be conserved in every chemical reaction?
According to the the law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed.So that the student told that both the energy and mass must be conserved in every chemical reaction.
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74.22g lithium bromide is dissolved in 52.71 mL water. Calculate the molarity of the
solution.
Answer:
Your search - 74.22g lithium bromide is dissolved in 52.71 mL water. Calculate the molarity of the solution. - did not match any documents.
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What change must made to the coefficients to balance this equation?
C3H8 + 5 O2 → 4 CO2 + 3 H2O
Switch the 3 and the 4, this change must made to the coefficients to balance this equation.
Now, the correct balance equation is C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂O
This method of balancing chemical equations involves assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.
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What is the density
Answer:
i dint not knowwws wj
example
Explanation:
this is so hard someone give answer
a density is a height and can the numbers
maid that because is too long with a
short 40.-- micality
hope itz help
1. What is conductivity? How can electrical conductivity be measured?
2. What does an electrical conductivity probe consist of?
3. How does an electrical conductivity probe work?
4. What is current flowing through the water proportional to?
5. What happens when there is a higher dissolved salt/ion concentration?
6. What is an electrolyte?
Because there are free electrons present, solid copper conducts electricity. CuCl2(g) does not conduct electricity because it contains no free electrons.
Because free electrons are drawn to metal cations by electrostatic forces in the metallic connection, metals are referred to as conductors of electricity. The conductivity of solid metals is accounted for by these free electrons.
What is conductivity?
The word "conductivity" is used to describe a number of physical phenomena. In terms of heat, conductivity is the amount of heat that moves through a slab with a unit cross-sectional area per second when there is no temperature difference between the two faces.
Conductivity is a helpful indicator of water quality in general. Every body of water has a typical conductivity range that, once determined, can be used as a reference point for comparison with routine conductivity tests.
What is electrolyte ?
A medium that contains ions and is electrically conducting due to the mobility of those ions but does not conduct electrons is called an electrolyte. This contains the majority of salts, acids, and bases that are soluble when dissolved in polar solvents like water.
Along with magnesium, calcium, phosphate, and bicarbonates, sodium, potassium, and chloride are the important electrolytes. We obtain electrolytes from our diet and drinks. Unbalanced amounts of these electrolytes might result in either high or low levels.
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the molar absorptivity of a compound at 500 nm wavelength is 252 m-1cm-1. suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 ml solution. what would be the absorbance in a 6 .00 mm pathlength cell? type answer:
Based on Beer's law and the data provided (molar absorptivity, number of moles, volume of the solution, cell dimension) we can calculate that the absorbance of the sample will be 0.42336.
According to Beer's law, the measured absorbance is proportional to the molar absorptivity of the substance, its molarity in the sample, and the pathlength of the cell:
A = ε * c * l
ε - molar absorptivity (252 M⁻¹cm⁻¹)
c - molarity of the sample
l - pathlength (6.00 mm = 0.6 cm)
To calculate the absorptivity we need to calculate the molarity of the sample:
c = n/V = 0.00140 mol / 0.5000 L = 0.00280 M
A = 252 M⁻¹cm⁻¹ * 0.00280 M * 0.6 cm = 0.42336
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Please help^^
Vinegar will/will not dissolve in water and will/will not dissolve in vegetable oil because it is polar/nonpolar/ionic.
Rubbing alcohol will/will not dissolve in water and will/will not dissolve in vegetable oil because it is polar/nonpolar/ionic.
Salt will/will not dissolve in water and will/will not dissolve in vegetable oil because it is polar/nonpolar/ionic.
Answer:vinegar will disolve in water, water will not go into veg oil because it is polar.
rubbing alcohol will disolve in water and not in vegtable oil because it is nonpolar
salt will disolve and water will not disolve in veg oil because it is ionic
Explanation:
Which planet is the farthest away from the Sun? Is this always true? Explain
your answer.
Answer: Pluto
Explanation: Ok, so Pluto is the farthest. It is 3.7 billion miles away from our sun.
Human Hair Predicts Weathery
Bad hair days are not new to science! In 1783, Swiss geologist Horace Benedict de
Saussure observed that strands of hair lengthen or contract when exposed to
different levels of moisture. He uused this knowledge to invent a device that used
human hair to measure the amount of moisture in the atmosphere.
The hair hygrometer was just one tool used to measure changes in the atmosphere.
Can you think of any others? With a partner, brainstorm a list of techniques or tools
that are used to record weather. Write your ideas in the space below.
Hair fall is due to weather change and due to humidity in weather. Hair fall can be because of chemical in oil and shampoo.
What are chemicals?Chemicals are defined as a substance is a type of matter with a consistent chemical composition and distinct properties.
It can also be defined as a substance that cannot be broken down without undergoing change.
Chemicals are the substances that are used in chemistry experiments.
There are five main types of chemicals.
Organic chemicalsInorganic chemicalsAnalytical chemicalsPhysical chemicalsBiochemicalsSome of the common chemicals are
Sulphuric acidHydrochloric acidSodium hydroxideEthanolMethanolThus, hair fall is due to weather change and due to humidity in weather. Hair fall can be because of chemical in oil and shampoo.
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In a neutralization reaction, water is formed from
Answer:
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water
Make Me As Brainliest
Answer:
it's b
hydrogen ions and hydroxide ions...
hope it helps you
study the steps in the reaction mechanism. elementary step 1: br2 no⟶br2no elementary step 2: br2no no⟶2brno give the overall reaction that this mechanism describes.
The mechanism of formation of Nitrosyl bromide from [tex]Br_2[/tex] and NO in a chemical reaction is depicted by the given elementary steps.
The outcome of a reaction combining nitrogen monoxide and [tex]Br_2[/tex] as our starting materials will be nitrosyl bromide; the final mixture will have a combination of all three chemicals.
Nitrosyl bromide is a red gas that condenses slightly below room temperature. The reversible reaction of nitric oxide with bromine can produce nitrosyl bromide.
Overall reaction can be obtained by adding the given two elementary steps:
[tex]Br_2 + NO \rightarrow Br_2NO\\Br_2NO + NO \rightarrow 2BrNO[/tex]
On addition of the above two reactions,
[tex]Br_2 + Br_2NO + 2NO \rightarrow Br_2NO + 2BrNO[/tex]
The overall reaction obtained is:
[tex]Br_2 + 2NO \rightarrow 2BrNO[/tex]
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HELP ASAP! Will mark brainliest for correct answer
The density data for a
substance was collected in
the table to the right. The
substance is known to have a
density of 7.4 g/mL. What is
the percent error for the data?
A. about 12%
B. about 0.12%
C. about 14%
D. about 0.14%
The correct option is A.
The percentage error in the measurement of the density is about 12%.
What is error in measurement?The error in any measurement is the difference between the actual measurement of the substance and the estimated measurement of the substance.
The percentage error is obtained by dividing the error in the measurement by actual measurement and multiply the result by 100%.
The average density measurement = 6.5 g/mL
error = actual measurement - estimated measurement
error = 7.4 g/mL - 6.5 g/mL
error = 0.9 g/mL
percentage error = (0.9 / 7.4) x 100%
percentage error = 12.16 %
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8. At the same concentration (100 mM which is 0.1 M), should the
measured absorbance at 500 nm for three red solutions (drink mix,
cobalt (II) nitrate and cobalt (II) chloride) be similar.
yes or no
Because red and its complementary hue, green, are communicated, we see CoCl2 as a red color. Green, however, is its complementary color and is what is absorbed. The only color that can be seen is the color that is communicated. Red is what we can see, not green.
What is Absorbance ?The logarithm of the ratio of incident to transmitted radiant power through a sample is known as absorbance. As an alternative, absorbance can be defined as "the negative logarithm of one minus absorptance, as measured on a homogeneous sample," for samples that scatter light.
Absorbance is the amount of light at a particular wavelength that a substance or item is able to absorb. The real absorbance unit is referred to as absorbance units (abbreviated as AU). Transmittance, on the other hand, is a term used to describe a measurement of how much light is reflected by a substance at a specific wavelength.As opposed to absorption, which occurs when electrons move up to a higher energy state from a lower energy state, emission occurs when electrons move down to a lower energy state, giving rise to a negative energy. When electrons undergo an energy change that is positive and migrate from one state of lower energy to another, this is called absorption. The color that can be seen by the eye is called the transmitted color, whereas the color that cannot be seen is called the absorbed color. The ntary color is discernible.
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How many grams are there in 8.99x1024 atoms of carbon
The atomic weight of one carbon atom = 12 amu
Mass of 1 mole of carbon atoms = 1 × atomic weight of one carbon
= 12 gm
Since we already know that the atomic mass is specified for one mole of the atom, we may get the mass of one atom by dividing the mass by Avogadro's number.
The mass of one atom of carbon is = Atomic mass/Avogadro number
= 12g/6.022×10^23
= 126.022×10^−23g
= 1.9933×10^−23g
Hence, the mass of 1 carbon atom is 1.9933×10^−23grams
Now,
Mass of 8.99 x 10^24 atoms = (8.99 x 10^24) x (mass of 1 carbon atom)
⇒ Mass of 8.99 x 10^24 atoms = 8.99 x 10^24 x 1.9933×10^−23grams
⇒ Mass of 8.99 x 10^24 atoms = 17.919767 x 10
⇒ Mass of 8.99 x 10^24 atoms = 179.2 g (approx.)
What is Mole concept?A practical way to indicate the quantity of a substance is using the mole concept. The numerical value and the units in which the magnitude is represented can be used to decompose any measurement into two pieces.For instance, the magnitude and unit are "2" and "kilogram," respectively, when a ball's mass is determined to be 2 kilograms.One gram of a pure element is considered to possess a staggering number of atoms when discussing particles at the atomic (or molecular) level. The term "mole" is frequently used in this context. The unit called a "mole," which is a count of a huge number of particles.A mole is the measure of a substance that includes precisely 6.02214076 * 10^23 of the substance's "elementary entities," according to the science of chemistry.To learn more about Mole concept, refer to:
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Objective: Students will create a mini-poster (on a Word document) that visually illustrates the process of balancing a chemi equation for Na + __H2O → __NaOH + __H2 1. In the top half of the poster, for the unbalanced chemical equation: ✓ In large letters, write the unbalanced chemical equation using the formulas of the substances. ✓ In large letters, write the unbalanced chemical equation in words, using their knowledge of naming compounds. ✓ Represent the number of atoms of each element with colored circles ("atoms"). ✓ Show an inventory of the atoms on the reactant side and the product side (i.e. 2H, 20).
The unbalanced chemical equation is: Na + H₂O → NaOH + H₂
The unbalanced chemical equation in words: One mole of sodium atom reacts with one mole of water to form one mole of sodium hydroxide and one mole of hydrogen gas.
The number of atoms on the reactant side is: 1 Na, 2 H, and 1 O
The number of atoms on the product side is: 1 Na, 3 H, and 1 O
What are chemical equations?Chemical equations are equations that use the symbols of the elements to represent the chemical reaction that occurs between elements or compounds called reactants to form products.
A chemical equation may be balanced or unbalanced.
A chemical equation is unbalanced when the number of moles of atoms of each element reacting is not equal on both sides of the reaction.
A chemical equation is balanced when the number of moles of atoms of each element reacting is equal on both sides of the reaction.
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For quantum numbers, if n=5, what is the subshell of l=4? can l be bigger than 3?
Answer:
a) The subshell would be 5g .
b) Yes L can be bigger than 3 in case of n=5.
Explanation:
a) The given principle quantum number n=5 signifies the 5th orbit. Also, the given Azimuthal quantum number l=4 represents the g subshell. Thus, the subshell in which the electrons with the given set of principle and azimuthal quantum number are found is 5g.
b) As n=5 and the general rule is l=n-1. So L can be equal to 1,2,3 or 4.
In the fahrenheit temperature scale, water freezes at 32°f and boils at 212°f. In the celsius scale, water freezes at 0°c and boils at 100°c. Given that the fahrenheit temperature f and the celsius temperature c are related by a linear equation, find f in terms of c.
The temperature reading on Fahrenheit scale is related to the The temperature reading on Celsius scale by a linear equation F = 9/5 C + 32
Data for Fahrenheit temperature scale:
Water freezing point = 32⁰
Water boiling point = 212⁰
Therefore, the scale is divided into 212 - 32 = 180 scales.
Data for Celsius temperature scale:
Water freezing point = 0⁰
Water boiling point = 100⁰
Therefore, the scale is divided into 100 - 0 = 100 scales.
Scale ratio:
C : F = 100 : 180 = 5 : 9
It means each increment of 1⁰ on Celsius scale is equal to an increment of 9/5 degree on Fahrenheit scale. However, we need to add an offset 32⁰ on Fahrenheit scale.
Hence, the reading C⁰ on Celsius scale is equivalent to:
F = 9/5 C + 32
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in setting up this experiment, a student noticed that a bubble of air leaked into the eudiometer tube when it was inverted in the water bath. what effect would this have on the measured volume of hydrogen gas? would the calculated molar volume of hydrogen be too high or too low as a result of this error? explain.
The calculated molar volume of hydrogen will be too high as a result of this error
The gas being recorded during the experiment would not only include hydrogen gas, but the air that leaked into the eudiometer tube as well. This leads to the increase in the volume of hydrogen gas which will be too high. Since the volume of hydrogen is too high, the calculated molar volume of hydrogen would also be too high.
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