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3 years ago

What is electron affinity?

Chemistry

1 answer:

Inessa [10]3 years ago

7 0

Answer:

The ability of an atom to accept an electron.

Explanation:

Electron affinity is measured by observing the energy change of a substance when an electron is added to it in its neutral gas form. For example, elements that are on the far right of the periodic table (excluding noble gases) are more likely to accept electrons rather than give them up. This is why Fluorine has the highest electron affinity of all atoms on the periodic table.

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Balance the following reaction. CH4+O2==>CO2+H20

Radda [10]

CH4 + 2O2 --> CO2 + 2H2O

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3 years ago

Read 2 more answers

the space shuttle releases a space telescope into orbit around the earth . the telescope goes from being stationary to traveling

gavmur [86]

Answer:

a = 68 m/s²

Explanation:

Definition:

The acceleration is rate of change of velocity of an object with respect to time.

Formula:

a = Vf - Vi/t

a = acceleration

Vf = final velocity

Vi = initial velocity

t = time

Units:

The unit of acceleration is m.s⁻².

Given data:

a = Vf - Vi/t

a = 1700 m/s - 0 m/s / 25 sec

a = 1700 m/s / 25 sec

a = 68 m/s²

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3 years ago

Using solubility rules, determine if the following compounds are soluble in water. insoluble soluble A. CuCl2 B. BaSO4

Leviafan [203]

Answer :

(A) $CuCl_2$ : It is soluble in water.

(B) $BaSO_4$ : It is insoluble in water.

Explanation :

Solubility : It is defined as the amount of solute dissolved in a solvent at a given temperature.

According to the solubility rules:

All chlorides are soluble except $Ag^+,Pb^+\text{ and }Hg^{2+}$

All sulfates are soluble except $Ba^{2+},Pb^{2+},Ca^{2+}\text{ and }Sr^{2+}$

From this we conclude that,

(A) $CuCl_2$ : It is soluble in water.

(B) $BaSO_4$ : It is insoluble in water.

8 0

4 years ago

For a reaction system at equilibrium, LeChatelier's principle can be used to predict the A) activation energy for the system B)

SCORPION-xisa [38]

For a reaction system at equilibrium, LeChatelier's principle can be used to predict the "effect of a stress on the system".

<u>Option: C</u>

<u>Explanation:</u>

Le Chatelier's theory can be implemented to forecast a system's behavior due to variations in pressure, temperature, or concentration that will lead in predictable and contested variations in the system adjustments to establish a new state of equilibrium. This means that adding heat to a process would favor the endothermic path of a reaction, because this decreases the amount of heat generated in the system.

Here shift in equilibrium take place when volume increase, the total pressure decreases, which have potential to reverse the reaction, while on increasing pressure of system, the total volume decreases of the gaseous system, which can shift an equilibrium in the direction of the fewer molecules.

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3 years ago

When iron (III) oxide combines with sulfuric acid H2 S04 the product formed are water and iron (III) sulfate. What is the coeffi

jarptica [38.1K]

Answer:

coefficient 3 is needed t with water molecule to balance the equation.

Explanation:

Chemical equation:

Fe₂O₃ + H₂SO₄ → Fe₂(SO₄)₃ + H₂O

Balanced chemical equation:

Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O

The equation is balanced. There are two iron three sulfate six hydrogen and three oxygen atoms are present on both side of equation.

The given equation completely follow the law of conservation of mass.

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Coefficient with reactant and product:

Fe₂O₃ 1

H₂SO₄ 3

Fe₂(SO₄)₃ 1

H₂O 3

So coefficient 3 is needed t with water molecule to balance the equation.

5 0

4 years ago

What is electron affinity? ​

What is electron affinity?