Consider the statement below.
“When nitrogen is liquefied, heat is released.”
Is this statement true or false?
It is false because nitrogen absorbs heat when it is liquefied.
It is false because nitrogen cannot absorb enough heat to liquefy.
It is true because heat is released when a gas changes to a liquid.
It is true because heat is released when a liquid changes to a gas.

The statement, that describes when nitrogen is liquefied, heat is released is "it is true because heat is released when a gas changes to a liquid."

What is heat released?

Heat is used to release energy in some chemical reactions. In other words, they radiate heat into the environment.

The energy generated when a gas condenses to a liquid is known as latent heat of condensation. Condensation is the transformation of a gas into a liquid.

When steam is cooled, it releases thermal energy and transforms into a liquid. This is known as condensation.

Heat must be removed in the given statement to transform gaseous nitrogen to liquid nitrogen.

Hence the correct option is C.

Learn more about heat released here

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