Determine the molar mass of gas, 1 liter of which has a gas mass of 1.25.

univerkov | August 17, 2021 | education

Let’s determine the amount of substance of an unknown gas:

v (gas) = V (gas) / Vm = 1 / 22.4 (mol).

Let’s determine the molecular weight of the unknown gas:

M (gas) = m (gas) / v (gas) = (1.25 / (1 / 22.4)) = 1.25 * 22.4 = 28 (amu),

which corresponds to nitrogen (N2), carbon monoxide (CO) or ethylene (C2H4).

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