(a)[1]
State the change in internal energy $\Delta U$ for one complete cycle, XYZ X. $\Delta U = \;\ldots\ldots\ldots\ldots\ldots\ldots\ldots\ldots\ldots\; \text{J}$
(b)[2]
Calculate the amount of gas $n$. $n = \;\ldots\ldots\ldots\ldots\ldots\ldots\ldots\ldots\ldots\; \text{mol}$
(c)[2]
Complete Table 2.1. Use the space below to show any working.
(d(i))[3]
The first law of thermodynamics for a system can be written as $\Delta U = q + W$. State, with reference to the system, the meaning of: $\Delta U:$ $q:$ $W:$
(d(ii))[2]
Explain the way in which the first law of thermodynamics applies to the change Z to X.