The mass percent nitrogen in nitrous acid HNO2 is?

Answer 1

Since we need the mass percent, we need to know the molar mass of the entire compound:

H - 1g/mol

N- 14 g/mol

O -32 g/mol (16 g/mol x 2)

which equals 47 g/mol.

now, put the weight of the unknown, N, over the entire weight.

14/47 = 29.8 g/mol

Answer 2

Nitrogen: 93.2869%

Hydrogen: 6.7131%

Answer 3

The molecule of nitrogen dioxide contain 30,446 % nitrogen.

Answer 4

The molar mass of HNO2 is 47.02 g/mol. The molar mass of nitrogen in HNO2 is 14.01 g/mol. Therefore, the percent nitrogen in HNO2 is (14.01 g/mol / 47.02 g/mol) x 100% ≈ 29.8%.

Answer 5

The oxide NO contain46,68 % nitrogen.