Select the following processes that represent a decrease in entropy: Group of answer choices Water is heated in the microwave from 23 oC to 90 oC. 2 NO2(g) → N2O4(g) The sublimation of I2 CO2 gas is dissolved in water to make a carbonated beverage

The answers that represent a decrease in entropy are:

-CO2 gas is dissolved in water to make a carbonated beverage

-NO2(g) → N2O4(g)

Explanation:

Since in carbonated drinks, carbon dioxide is in its liquid form, since a pressure is applied to said gas, in this way, when carbon dioxide dissolves in a liquid, its entropy decreases, thus producing a negative change in entropy (the entropy of a gas is higher than the entropy of a liquid).

The number of gaseous reagents is equal to 1-2 = -1. Since it is negative, therefore, entropy is also negative.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons