What is the mass of 2.8 liters of nitrogen?

In order to calculate the mass of nitrogen, we use the formula m = n (N2) * M (N2). M is the molar mass, for nitrogen it is equal to 14 g / mol. In order to find the amount of a substance, we will use the formula n = V / Vm. Vm – molar volume, under normal conditions it is always equal to 22.4 l / mol. n (NaNO3) = 2.8 / 22.4 = 0.125 mol.
We have: m (N2) = 0.125 * 14 = 1.75g



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