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.

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