What is the meaning of unnecessary ?
:-)=_=

Definition of unnecessarily

Definition of unnecessarily : not by necessity : to an unnecessary degree unnecessarily harsh criticism.

Unnecessary basically means something not important, not needed or required for anyone. anything unnecessary is not important

Explanation:

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the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.

where is the drop down menu and where are the answers