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

(A) the ratio of the pressure and density of the gas (B) internal energy of the gas (C) PV of the gas (D) all of the above
Can you answer this question?

$P = \large \frac {dRT}{M} \Rightarrow \frac{P}{d} = \frac{RT}{M}$$\rightarrow$ depends only on T for a given gas.
$u = nC_v T\rightarrow$ depends on number of moles and T.
$PV = nRT \rightarrow$ depends also on number of moles.
Therefore, the correct answer is (A) ratio of pressure and density of the gas.
answered Jan 22, 2014