[单选题]
Under what conditions of density and pressure does the following graph represent how the volume of a real gas varies with temperature at constant pressure?
A. Low pressure and low density
B. Low pressure and high density
C. High pressure and low density
D. High pressure and high density
参考答案: A
本题详细解析:
Explanation:
The graph shows Charles' Law for an ideal gas. A real gas may be approximated by an ideal gas under low pressure and when the density is low. At higher pressures and larger densities, the effects of intermolecular forces become significant.
