Determine the amount of substance of nitrogen molecules (N (2)) weighing 0.2 kg.
| January 17, 2021 | education
given:
m (N2) = 0.2 kg = 200 g
find: n (N2)
decision:
the amount of a substance can be found by dividing the mass of a substance by its molar mass.
n (N2) = m: M = 200 g: 28 g / mol = 7.14 mol
answer: 7.14 mol
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