A large rift valley can be found along the east coast of Africa. It has been slowly widening over time, and it is now wide enough to contain many large lakes.
Which of these best explains the slow widening of this rift valley over time?
Group of answer choices

Earth's rotation

wind and water erosion

the Moon's gravitational pull

lithospheric plate movement

Answer:

-20.2  * 10^-18 J

Explanation:

From;

E = hc/λ

h= planks constant = 6.6 * 10^-34 Js

c= speed of light = 3 * 10^8 ms-1

λ = wavelength = 10.8 * 10^-9 m

Substituting values;

E = 6.6 * 10^-34 * 3 * 10^8/ 10.8 * 10^-9

ΔE = -1.8 * 10^-17 J

But for ground state  E1=−13.6eV or -2.176 * 10^-18 J

From;

ΔE = E4 - E1

E4 = ΔE + E1

E4 =  (-1.8 * 10^-17) + (-2. 176* 10^-18)

E4 = -20.2  * 10^-18 J

Answer:

E

Explanation:

took the test

Answer:

- Oxido de magnesio

Explanation:

Mg → magnesio

O → oxígeno

La unión del oxígeno (no metal) con un metal, forma el determinado óxido que se nombra como óxido de .... y el no metal.

En este caso, podemos deducir que el contenido del frasco es de óxido de magnesio, aunque viendo que hay un sólo átomo de oxígeno podemos llamarlo como monóxido de magnesio, similar al CO (monóxido de carbono).

A partir de que el magnesio sólido entre en contacto con el aire, se produce MgO de acuerdo a la siguiente reacción:

2Mg  +  O₂ →  2MgO

Answer:

triumph

Explanation:

Because women had been fighting so much that she feels triumphant that they will succeed and they are willing to continue until they reach success

Answer:

triumph

Explanation:

i got it right

Answer:

the popultion of it

Explanation:

NH₄+ , (CO₃)₂- , OH- , (PO₄)₃- are all examples of polyatomic ions.

A covalent bound type of collection of two or more atoms or of a metal complex that can be said as behaving as a single unit and that has a net charge which is not zero is referred to as a polyatomic ion or a molecular ion.

Depending on the terminology , a polyatomic ion may or may not be referred to as a molecule. The Greek word poly- that means "many," although even ions made of just two atoms are frequently referred to be polyatomic.

A polyatomic ion may also be referred to as a radical  (or less commonly, as a radical group). 

The term "radical" today refers to a variety of free radicals, which are species with an unpaired electron and do not require a charge.

The hydroxide ion, which has the chemical formula OH- and is made up of one oxygen and one hydrogen atom and has a net charge of 1, is a straightforward example of a polyatomic ion.

A nitrogen atom, four hydrogen atoms, and a charge of +1 make up an ammonium ion, which has the chemical formula NH₄+.

In the context of acid-base chemistry and the production of salts, polyatomic ions are frequently helpful.

A polyatomic ion is frequently thought of as the conjugate base or acid of a neutral molecule. For instance, the polyatomic hydrogen (H₂) sulphate anion (SO₄) is the conjugate base of sulfuric acid (H₂SO₄). The sulphate anion (SO₄)₂ is created when another hydrogen ion is eliminated.

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Answer:

iron (Ar) 3d^6 4s^2 and cobalt (Ar) 3d^7 4s^2

Based on the electron configuration of elements Fe and Co can likely form ions with multiple charges.

Electron configuration of an element describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.

Electron configuration can be written according to the following rules-

1. Aufbau Principle

2. Pauli's exclusion principle

3. Hund's rule

Electrons will be filled according to the increasing order of the energy as per the n+l rule.

Given,

a) zinc [Ar] 3d¹⁰4s²

b) iron [Ar] 3d⁶4s²

c) sodium [Ne] 3s¹

d) cobalt [Ar] 3d⁷ 4s²

e) silver [Kr] 4d¹⁰ 5s¹​

Except Co and Fe, all the elements when loose 1 or 2 electrons form full filled electrons, Fe and Co show +2, +3, +4 etc oxidation states.

Therefore, Based on the electron configuration of elements Fe and Co can likely form ions with multiple charges.

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Answer:

Pizza is difintly a mixture the other i have no idea..im pretty sure CO2 is a substance btw im sorry I wish I could help more Hope this helps! :)

Explanation:

Answer:

Mixture

?

Pure

Pure

Pure

Pure

Mixture

Mixture

Pure

Pure

Mixture

Pure

Explanation:The answers are on google. Im not sure what they mean by hunter.

Answer:

λ = 4.2x10^-13 m

Explanation:

c = λν

c is speed of light 3x10^8 m/s

λ is wavelength

ν is frequency

3.10^8 = λ . 7.13 × 10^20

λ = 4.2x10^-13 m

Answer:

Por ejemplo, el Litio se ubica en el grupo 1A, entonces tiene 1 electrón de valencia.

Explanation

Excepto los grupos 3-12 (los metales de transición), el dígito de las unidades del número de grupo identifica cuántos electrones de valencia se pueden asociar con un átomo neutro de un elemento listado en dicha columna.E

Answer:

Gallium, Phosphorus, Chlorine, Fluorine

Explanation:

Arrange the elements in order of increasing ionization energy. Use the periodic table to identify their positions on the table.

Drag each tile to the correct box.

Tiles

chlorinefluorinegalliumphosphorus

Sequence

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

For neutral atoms, ionization energy is positive, indicating that ionization is indeed an endothermic process. The higher the ionization energy of an atom, roughly speaking, the nearer the outer electrons are to nucleus. The element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

Therefore, the element arranged in order of increasing ionization energy are Gallium, Phosphorus, Chlorine, Fluorine.

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Answer: 80.6

Explanation:

q = mcAt

we have the grams of water, temp change, and specific heat of water is 4.186 J/g so we can plug in our numbers to find the heat energy in joules

q = (3.10)(4.184)(82.4-56.4)

q= 337.2304 J

we need our answer to be in calories so divide our answer by 4.184 and we get 80.6 calories

The amount of calorie required to warm 3.10 g of water from 56.4°C to 82.4°C is 80.6 calories.

HOW TO CALCULATE CALORIES:

Q = m × c × ∆T

Where:

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Answer:

13.3

Explanation:

Before opening the stopcocks you have 40psi in total.

After that, those 40psi will be divided into 3bulbs, so 40/3=13.3psi for the system.

Answer:

0.303kg/m

Explanation:

Density=m/v where m is mass

and v is volume

we then convert m in grams to kg

= 34.16/1000

=0.0342kg

converting ml to m

=11.3/100

=0.113m

then density=0.0342/0.113

=0.303kg/m

The manufacturing process shown in the photograph is a process of forming. The correct answer is option C.

Manufacturing processes refer to the series of steps or operations involved in converting raw materials or components into finished products. These processes are designed to transform the materials into the desired shape, form, or functionality.

The photograph shows that, the substance is poured in a mold to create a product of specific geometry. In this case, it is a cube. This process is known as forming processes. It includes techniques like bending, stamping, or forging, which involve shaping materials by applying pressure or manipulating them through dies or molds.

Therefore, the photograph shows the manufacturing process is a process of forming. Option C is the correct answer.

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Explanation:

Sugar=12 carbon+22 Hydrogen+11 oxygen

marble =Calcium+Carbon×3 oxygen

Natural gas=Nitrogen +4 Hydrogen

Rubbing Alcohol=3 carbon +8 Hydrogen+Oxygen

Glass=Silicon +2 oxygen

Answer:

12 Carbon + 22 Hydrogen + 11 Oxygen

Calcium + Carbon + 3 Oxygen

Carbon + 4 Hydrogen

3 Carbon + 8 Hydrogen + Oxygen

SIlicon + 2 Oxygen

Explanation:

Can I have brainliest? TYSMMMMMMMMMMMMMMMMm

Answer:

376.56

Explanation:

using the formula q=mcΔT, where m=15g, C=4.18J/g°C and ΔT=6.0°C

Answer:

a

Explanation:

Prevailing winds can cause a milder climate with heavy rain is the change that affects the short-term climate in a region, hence option A is correct.

Concentrated areas of winds are known as air currents. They primarily result from variations in the temperature or atmospheric pressure.

The horizontal and vertical currents are present at the mesoscale, whereas horizontal currents predominate at the synoptic scale.

A region's short-term climate can be dramatically impacted by changes in wind currents. As they move moisture from one place to another, prevailing winds can result in a milder climate with heavy rain.

As a result, the impacted area may see higher precipitation and a more temperate environment.

Therefore, prevailing winds can cause a milder climate with heavy rain can impact the short-term climate in a region.

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[tex]\huge\boxed{3moles}[/tex]

The compound given in the question is [tex]CaCO_{3}[/tex] which is called Calcium Carbonate. A 1 mole of Calcium Carbonate has,

1 Moles of Calcium.

1 Moles of Carbon.

3 Moles of Oxygen.

In the Question, It is asked that how many moles are present in the 1 mole of Calcium Carbonate, So as per information we have, there are 3 moles of oxygen present in Calcium Carbonate.

__________________________________________________________

Much simpler way to understand why there are 3 mole is look at the subscript along the element. There is no number in the subscript of Calcium and Carbon thus 1 Mole, There is 3 present in the subscript thus 3 moles of calcium. Remember that subscript suggests the number of moles of an element in only 1 MOLE OF COMPOUND

Answer:

In order for people to survive, we need water. If we wanted to live on the moon, we would need water.

Answer:

Gravity

Explanation:

So water on the moon turns into fine ice dust, when you pour it.

Answer:

D

Explanation:

Because sub-shell p have maximum no. of electrons I. E. 6

Answer:

You can describe, the state, the color, the texture, and the odor of matter using your senses. ... As the motion of particles continues to increase, they move even farther apart. ... For example water is normally a liquid at room temperature. When it ... Gases have the most kinetic energy because their particles move very quickly.

Explanation:

Hopefully this helps!

Answer:

They vibrate in place and have very strong bonds.

Explanation:

All solids, in their form, have particles that vibrate in place and strong bonds to keep their form.

Explanation:

The best way to separate the mixture is by using a bar magnet. We explore the magnetic property of the iron fillings in the mixture to separate it out.

Answer:

Itlolk

Explanation:

Answer:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Explanation:

YW :)

Answer:

The higher the temperature, the faster the particles move, the lower the temperature, the slower.

Answer:

1,6,8

Explanation:

Periodic Table- H=1.C=6,O=8

Hydrogen is H, Carbon is C, Oxygen is O

One molecule of the sample contains three different elements with atomic numbers 1,6 and 8.

Element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.Each element has its own characteristic property.

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Your question is incomplete, but most probably your full question was,a sample substance has the chemical formula:

H2CO3

One molecule of the sample contains -

Two different elements with atomic numbers 1 and 27

Two different elements with atomic numbers 1, 6, and 8

Two different elements with atomic numbers 2 and 29

Two different elements with atomic numbers 2, 8 and 20

Three different elements with atomic numbers 1,6 and 8