Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are...

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Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are copper metal and water vapo

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Answer 1

Answer #1

Balance chemical equation is:
2 NH3 + 3 CuO -> N2 + 3 Cu + 3 H2O

From balanced equation above:
Mol of N2 formed = (1/2)* mol of NH3 reacted
= (1/2) * 3.58 mol
= 1.79 mol

Molar mass of N2 = 28.02 g/mol

use:
mass of N2,
m = number of mol * molar mass
= 1.79 mol * 28.02 g/mol
= 50.2 g
Answer: 50.2 g

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Answer 2

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