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In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?

AThe temperature decreases.
BThe temperature increases.
CThe temperature remains the same.

Verified Answer :

taskmasters

The
correct answer is A. In the combined gas law, if the volume is decreased and
the pressure is constant, then the temperature decreases.

 P1V1/
T1 = P2V2 / T2

 Assume
the volume decrease by half; V2 = V1/2

 P1V1/
T1 = P2V1 /2 T2

 Cancelling
terms,

 1/T1
= 1/2 T2

T2
= T1/2

 Thus,
the temperature decreased.

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