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Sonja [21]
3 years ago
9

In an exothermic reaction, energy is blank the surroundings.

Chemistry
2 answers:
S_A_V [24]3 years ago
5 0

Answer: released to; absorbed from

- In an exothermic reaction, energy is released to the surroundings.

- In an endothermic reaction, energy is absorbed from the surroundings.

Explanation:

An exothermic reaction is a chemical reaction that occurs spontaneously and brings about the release of energy to the surroundings. Hence, the reacting vessel feels hot as the reaction proceeds.

An endothermic reaction, on the other hand, does not occur spontaneously and proceed only when energy is absorbed from the surroundings. Hence, the reacting vessel feels cold as the reaction proceeds.

Art [367]3 years ago
4 0

Answer:in an exothermic reaction, energy is given office into the surroundings while in endothermic reaction energy is absorbed from the surrounding

Explanation:

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Explanation:

It is given that,

Isotope A has a mass of 34 amu and an abundance of 52%, isotope B has a mass of 33 amu and an abundance of 48%.

Let x is the average atomic mass of this element. It can be calculated as follows :

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So, the average atomic mass of this element is 33.52 amu.

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A sample of gas occupies 300 mL at 100K. What is its volume when the
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If the temperature of the sample of gas increases to the given value, the volume also increases to 600mL.

<h3>What is Charles's law?</h3>

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

V₁/T₁ = V₂/T₂

Given the data in the question;

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V₁/T₁ = V₂/T₂

V₂ = V₁T₂ / T₁

V₂ = ( 300mL × 200K ) / 100K

V₂ = 60000mLK / 100K

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Therefore, if the temperature of the sample of gas increases to the given value, the volume also increases to 600mL.

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