Calculate the molar mass of baking powder (NH4)2CO3
To calculate the molar mass of baking powder ((NH4)2CO3), we need to find the atomic masses of each element and sum them up.
The molecular formula of baking powder is (NH4)2CO3, which indicates that there are two ammonium (NH4) groups and one carbonate (CO3) group. Let's break down the formula and find the atomic masses:
1. Ammonium (NH4):
- The atomic mass of nitrogen (N) is 14.01 g/mol.
- The atomic mass of hydrogen (H) is 1.01 g/mol.
Since there are four hydrogen atoms in the ammonium group, we multiply the hydrogen atomic mass by 4.
Calculating the molar mass of ammonium:
Molar mass of N: 14.01 g/mol
Molar mass of H: 1.01 g/mol
Molar mass of (NH4): (14.01 g/mol) + (4 * 1.01 g/mol) = 18.04 g/mol
2. Carbonate (CO3):
- The atomic mass of carbon (C) is 12.01 g/mol.
- The atomic mass of oxygen (O) is 16.00 g/mol.
Since there are three oxygen atoms in the carbonate group, we multiply the oxygen atomic mass by 3.
Calculating the molar mass of carbonate:
Molar mass of C: 12.01 g/mol
Molar mass of O: 16.00 g/mol
Molar mass of (CO3): (12.01 g/mol) + (3 * 16.00 g/mol) = 60.01 g/mol
Now, let's calculate the molar mass of baking powder by adding the masses of ammonium and carbonate together:
Molar mass of (NH4)2CO3:
(2 * 18.04 g/mol) + 60.01 g/mol = 96.09 g/mol
Therefore, the molar mass of baking powder ((NH4)2CO3) is approximately 96.09 g/mol.