What is the mass of 36 liters of nitrogen?

univerkov | January 11, 2021 | education

Given:
V (N2) = 36 l
To find:
m (N2) =?
Decision:
1) Find the amount of substance.
n = V / Vm
n (n2) = 36 L: 22.4 L = 1.6 mol.
2) Find the mass of nitrogen.
m = n x M
Let’s find the molecular weight.
M (N2) = 14 x 2 = 28 g / mol
m (N2) = 1.6 mol x 28 g / mol = 44.8 g.
Answer: m (N2) = 44.8 g.

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