Calculate the mass percent composition of nitrogen in each of the following nitrogen compounds. Express your...

Question

Question

Calculate the mass percent composition of nitrogen in each of the following nitrogen compounds. Express your answer using four significant figures.

1. N2O5

2.HNO2

Answer 1

Answer #1

1. N2O5

Molar mass of N2O5 = 108.01 g/mol

mass of N2 present in 1 mole of N2O5 = 28 grams

percent composition of nitrogen = mass of N2/ total mass *100

= 28/108.01*100

= 25.92%

2. HNO2

Molar mass of HNO2 = 47.013 g/mol

mass of N present in 1 mole of HNO2 = 14 grams

percent composition of nitrogen = mass of N/ total mass *100

= 14/47.013*100

= 29.78%

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Answer 2

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