1.) In some process a fluid starts at $P_1$, $V_1$, $T_1$, and ends at $P_2$, $V_2$, $T_2$. Which of the following are true?

a.) The heat transferred to the system, $Q$, is independent of the path taken	FALSE
b.) The work done on the system, $W$, is independent of the path taken	FALSE
c.) The sum $Q+W$, is independent of the path taken	TRUE
d.) The difference $Q-W$, is independent of the path taken	FALSE
e.) The change in energy of the fluid is $\frac 3 2 (P_2 V_2-P_1 V_1)$	FALSE$^\dagger$

$^\dagger$ only true for a monatomic ideal gas

Comments:
Some books use $\Delta E=Q-W$, some $\Delta E=Q+W$. Which is correct depends on the definition of $W$; in the former case $W$ is the work done by the system (so that $W>0$ decreases the energy of the system) whereas for the latter $W$ is the work done on the system (so that $W>0$ increases the energy of the system). In general, chemists use the former and physicists use the latter. Unfortunately Young and Freeman use the former.

Score 1 point for each correct answer