## Essential University Physics: Volume 1 (3rd Edition)

We know that density is equal to mass over volume. Thus, the equation PV=nRT simplifies to: $\frac{P_1}{T_1d_1}= \frac{P_2}{T_2d_2}$ Thus, we find that the second density is equal to: $d_2 = \frac{2(373)}{1(393)} = 1.9 d_1$ Thus, we see that it is less than double.