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# Which of the following quantities depend on temperatures only for a given ideal gas?

(A) density of gas at given pressure (B) internal energy of 1 mole (C) Both A and B (D) Neither A nor B

$d = \large\frac{PM}{RT}$. At a given pressure, density varies only with temperature.
$u = nC_v T \rightarrow$ for $\;n = 1, u = C_v T$. Therefore, internal energy depends only on T.