Find the mass of 2 mol of potassium nitrate

univerkov | September 28, 2021 | education

Mass formula: m = M * n. (Product of molar mass by the amount of substance).

M (KNO3) = 39 + 14 + 16 * 3 = 101 g / mol. Molar mass, expressed in g / mol, is numerically the same as molecular mass.

n = 2 mol by condition. Therefore:

m (KNO3) = M (KNO3) * n (KNO3) = 101 g / mol * 2 mol = 202 g

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