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(A) According to the ideal gas law,$PV = nRT$,where $n = N/N_A$. Since $P$,$V$,and $T$ are the same for both gases,the number of moles $n$ must be the

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Total number of molecules

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(A) According to the ideal gas law,$PV = nRT$,where $n = N/N_A$. Since $P$,$V$,and $T$ are the same for both gases,the number of moles $n$ must be the same,which implies the total number of molecules $N$ is constant.Average kinetic energy is given by $K_{avg} = (3/2)k_BT$,which depends only on temperature $T$. Since $T$ is constant,the average kinetic energy is also constant.However,in the context of comparing two different gases,the total number of molecules is a fundamental consequence of Avogadro's Law under these conditions. Both $A$ and $B$ are constant,but the total number of molecules is the primary result of the given conditions.

At the same temperature,pressure,and volume of two gases,which of the following quantities is constant?

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