3.
As water vapor condenses at 100°C, the potential
energy of the molecules
A.
decreases
B. increases
C. remains the same

A. decreases  

Explanation:

You must remove energy from water vapour for it to condense, so its potential energy decreases.

108

explanation:

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answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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