Determine the formula of nitric oxide if a sample of this substance occupies a volume of 5.6 liters and has a mass of 11 g.

univerkov | December 10, 2020 | education

Determine the formula of nitric oxide if a sample of this substance occupies a volume of 5.6 liters and has a mass of 11 g. The mass fraction of nitrogen in the oxide is 63.64%.

n (nitric oxide) = 5.6 / 22.4 = 0.25 mol
M = m / n = 11 / 0.25 = 44 g / mol
44 * 0.6364 = 28 = mass of nitrogen in the compound
28/14 = 2 nitrogen atoms in the oxide
answer n2o

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