What is the mass percent of nitrogen in ammonium carbonate, (NH4)2CO3?
[(2*atomic mass N)/molar mass (NH4)2CO3]*100 = ?
To find the mass percent of nitrogen in ammonium carbonate, (NH4)2CO3, you'll need to know the molar masses of the elements present in the compound.
First, calculate the molar mass of ammonium carbonate:
(NH4)2CO3
Molar mass of N = 14.01 g/mol
Molar mass of H = 1.008 g/mol
Molar mass of C = 12.01 g/mol
Molar mass of O = 16.00 g/mol
Molar mass of (NH4)2CO3 = (2 × molar mass of N) + (8 × molar mass of H) + molar mass of C + (3 × molar mass of O)
Molar mass of (NH4)2CO3 = (2 × 14.01 g/mol) + (8 × 1.008 g/mol) + 12.01 g/mol + (3 × 16.00 g/mol)
After calculating, you'll find the molar mass of (NH4)2CO3 to be 96.09 g/mol.
Next, find the mass of nitrogen in (NH4)2CO3:
To calculate the mass of nitrogen, multiply the molar mass of nitrogen (14.01 g/mol) by the number of nitrogen atoms in the formula, which is 2. In this case, the mass of nitrogen is 2 × 14.01 g/mol = 28.02 g/mol.
Finally, to find the mass percent of nitrogen in ammonium carbonate, divide the mass of nitrogen (28.02 g/mol) by the molar mass of (NH4)2CO3 (96.09 g/mol) and multiply by 100:
Mass percent of nitrogen = (28.02 g/mol / 96.09 g/mol) × 100 = 29.15%
Therefore, the mass percent of nitrogen in ammonium carbonate, (NH4)2CO3, is approximately 29.15%.