1. Identify in each case if work is done Q or by the gas: a. gas in a container tted with a piston expands the container to twice its initial volume b. gas in a container tted with a piston is compressed to one-quarter of its initial volume c. a toy balloon is inated with helium 2. A system's initial internal energy is 27 .1. Then heat is added to the system. If the nal internal energy is 34J and the system does 26 J of work: a. How much work is done g the system? b. How much heat is added to the system? 3. The internal energy of the gas in a gasoline engine's cylinder decreases by 195 J. 11' 52.0 J of work is done by the gas, a. How much energy is transferred as heat? b. Is this energy added to or removed 'orn the gas? 4. The internal energy of a gas decreases by 344 J. If there is no heat transferred in the process: a. How much work is done? b. Is the work done on or by the gas? 5. Jfa steam engine takes in 2.254 x 10\" kJ from the boiler and gives up 1.915 x 10' kJ in exhaust during one cycle, how much work is done by the engine? 6. If a gasoline engine takes in 990 J of heat and loses 7'80 J to the cooling system and exhaust during each cycle, how much work is done by the engine? 7. In which of the following systems is entropy increasing? a. An egg is broken and scrambled b. A cluttered room is cleaned and organized. c. A thin stick is placed in a glass of sugar-saturated water, and sugar crystals form on the stick. 8. Which of the following systems have low entropy? a. A cultivated eld of cabbages b. A room after a party c. A freshly opened pack of cards