. What is the percent by mass of nitrogen in (NH4)2CO3?
dont know how to do, please help.
%N = (mass N/molar mas)*100
mass N = 2*N = 2*14.00whatever N is. Look it up. Post your answer if you want us to check it for you.
i got 29 %
How accurately do you want it calculated?
%N = (2*14.007/98.086)*100 = 29.155%
To find the percent by mass of nitrogen in (NH4)2CO3, you need to calculate the molar mass of nitrogen and the molar mass of the entire compound.
Here's how you can do it step by step:
1. Determine the molar mass of nitrogen (N):
Nitrogen (N) has an atomic mass of 14.01 g/mol.
2. Determine the molar mass of the entire compound [(NH4)2CO3]:
- The molar mass of ammonium (NH4) is calculated as follows:
Ammonium (NH4) consists of 4 hydrogen (H) atoms with an atomic mass of 1 g/mol each and 1 nitrogen (N) atom with an atomic mass of 14.01 g/mol, resulting in a molar mass of:
4 H + 1 N = 4(1 g/mol) + 1(14.01 g/mol) = 18.04 g/mol
- The molar mass of carbonate (CO3) is calculated as follows:
Carbonate (CO3) consists of 3 oxygen (O) atoms with an atomic mass of 16 g/mol each and 1 carbon (C) atom with an atomic mass of 12.01 g/mol, resulting in a molar mass of:
1 C + 3 O = 1(12.01 g/mol) + 3(16 g/mol) = 60.01 g/mol
- The molar mass of the entire compound [(NH4)2CO3] is the sum of the molar masses of ammonium and carbonate:
[(NH4)2CO3] = 2(NH4) + CO3 = 2(18.04 g/mol) + 60.01 g/mol = 96.09 g/mol
3. Calculate the percent by mass of nitrogen (N) in (NH4)2CO3:
The percent by mass is calculated using the following formula:
Percent by mass = (Molar mass of nitrogen / Molar mass of the entire compound) x 100
Percent by mass of nitrogen (N) = (14.01 g/mol / 96.09 g/mol) x 100
Now, you can use a calculator or perform the calculation manually to find the answer:
Percent by mass of nitrogen (N) ≈ 14.57%
Therefore, the percent by mass of nitrogen in (NH4)2CO3 is approximately 14.57%.