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SAT® Subject Test in Physics

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Isothermal Expansion of a Gas

SATPHY-JZTEG1

Which table most accurately represents the results of a gas expanding isothermally?

A
Volume of Gas increases
Pressure of Gas decreases
Temperature of Gas stays the same
Energy of Universe stays the same
Entropy of Universe stays the same
B
Volume of Gas increases
Pressure of Gas decreases
Temperature of Gas stays the same
Energy of Universe stays the same
Entropy of Universe increases
C
Volume of Gas increases
Pressure of Gas increases
Temperature of Gas increases
Energy of Universe stays the same
Entropy of Universe stays the same
D
Volume of Gas decreases
Pressure of Gas increases
Temperature of Gas stays the same
Energy of Universe increases
Entropy of Universe increases
E
Volume of Gas decreases
Pressure of Gas increases
Temperature of Gas stays the same
Energy of Universe stays the same
Entropy of Universe stays the same