An ideal gas is in contact with a heat reservoir to that it remains at a constant temperature of 300.0 K. The gas is compressed from 24.0 L to 14.0 L. The mechanical device that operating the piston to compress the gas expends 5.00 kJ of energy. How much heat flows between the gas and the heat reservoir?
A. -3.0 kJ
B. -5.1 kJ
C. -2.0 kJ
D. -5.0 kJ
D. -5.0 kJ
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A planet's average density is equal to its ________ divided by its ________.
A. mass; radius B. mass; volume C. mass; surface area D. volume; mass
Organisms that are found living kilometers beneath Earth's crust are referred to as
A) asthenophiles B) magmaphiles C) sublithophiles D) endoliths
A thin metallic shell of radius 40 cm has a charge of -25 nC on it. At the center of the sphere is a point charge of 35 nC. What is the electric field 15 cm from the center of the shell?
a. 
b. 
c. 
d. 
e. 
In an adiabatic free expansion
A. no heat is transferred between a system and its surroundings. B. the pressure remains constant. C. the temperature remains constant. D. the volume remains constant. E. the process is reversible.