Calculate the Mass Percent Composition of Nitrogen in N2O5

27 Aug 2021

What is the mass percent composition of nitrogen in N2O5?

Which of the following is the correct mass percent composition of nitrogen in N2O5?

a) 56.28%

b) 63.16%

c) 70.59%

d) 75.00%

The mass percent composition of nitrogen in N2O5 is approximately 25.94%.

To calculate the mass percent composition of nitrogen in N2O5, we first need to determine the molar mass of N2O5.

The molar mass of N2O5 is calculated as the sum of the molar masses of nitrogen (N) and oxygen (O):

Molar mass of N2O5 = (2 x molar mass of N) + (5 x molar mass of O)

Substituting the molar masses of N and O, the Molar mass of N2O5 = (2 x 14.01 g/mol) + (5 x 16.00 g/mol) = 108.01 g/mol

The mass percent composition of nitrogen in N2O5 can be calculated using the formula:

Mass percent composition = (mass of nitrogen / mass of compound) x 100%

For N2O5: mass of nitrogen = (2 x molar mass of N) = (2 x 14.01 g/mol) = 28.02 g

mass of compound = molar mass of N2O5 = 108.01 g/mol

Mass percent composition of nitrogen in N2O5 = (28.02 g / 108.01 g) x 100% = 25.94%

Therefore, the mass percent composition of nitrogen in N2O5 is approximately 25.94%.