Question

two balloons hold two different gases. the gases are held at the same pressure, volume, and temperature. which quantity can differ between the two gases? (1 point)

the gas constant of each gas

the mass of each gas

the number of moles of each gas

the molar volume of each gas

Explanation:

Step1: Recall ideal gas law

The ideal gas law is $PV = nRT$. Given $P$, $V$, and $T$ are the same for both gases, and $R$ is a universal gas - constant. So, from $PV=nRT$, the number of moles $n$ is the same for both gases.

Step2: Recall molar volume concept

Molar volume $V_m=\frac{V}{n}$. Since $V$ and $n$ are the same for both gases, molar volume is the same.

Step3: Consider gas mass

The mass $m = nM$. Different gases have different molar - masses $M$. Since $n$ is the same but $M$ can be different for different gases, the mass $m$ of each gas can be different.

Answer:

the mass of each gas