Which of the following terms describes a machine that converts heat into work? A. Entropy pump
B. Heat engine
C. Heat pump
D. Entropy engine

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

Most short-period comets do not have randomly oriented orbits because

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?