What happens to the entropy of a piece of wood as it is burned?
a. It increases.
b. It decreases.
c. It stays the same.
d. SubmitR

Option (a) is the correct answer.

Explanation:

Entropy is defined as the degree of randomness present in a substance. This means that more randomly the atoms in a substance are moving more will be entropy of the substance.

Entropy of a substance increases with increase in temperature.

For example, when a piece of wood is burned then its molecules will gain kinetic energy and hence, they start to move randomly from one place to another.

As a result, there will occur an increase in its entropy.

Thus, we can conclude that when a piece of wood is burned then its entropy increases.

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explanation:

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .