calculate the mass of ammonium sulphate, which contains the same number of moles as 4g of iron(ll) sulphate heptahydrate.
I will be happy tocheck your work.
To calculate the mass of ammonium sulphate that contains the same number of moles as 4g of iron(II) sulphate heptahydrate, you need to follow these steps:
1. Determine the molar mass of iron(II) sulphate heptahydrate.
- The chemical formula of iron(II) sulphate heptahydrate is FeSO4·7H2O.
- The molar mass of Fe (iron) = 55.845 g/mol.
- The molar mass of S (sulphur) = 32.06 g/mol.
- The molar mass of O (oxygen) = 16.00 g/mol.
- The molar mass of H (hydrogen) = 1.008 g/mol.
- The molar mass of water (H2O) = 18.015 g/mol.
- Therefore, the molar mass of iron(II) sulphate heptahydrate is calculated as follows:
Molar mass = (1 × molar mass of Fe) + (1 × molar mass of S) + (4 × molar mass of O) + (7 × molar mass of H2O)
2. Calculate the number of moles of iron(II) sulphate heptahydrate.
- To calculate the number of moles, you need to use the formula:
Moles = Mass / Molar mass
- In this case, the mass is given as 4g (as stated in the question) and the molar mass of iron(II) sulphate heptahydrate is calculated from step 1.
3. Use the number of moles to find the mass of ammonium sulphate.
- Ammonium sulphate has the chemical formula (NH4)2SO4.
- The molar mass of N (nitrogen) = 14.01 g/mol.
- The molar mass of H (hydrogen) = 1.008 g/mol.
- The molar mass of S (sulphur) = 32.06 g/mol.
- The molar mass of O (oxygen) = 16.00 g/mol.
- Therefore, the molar mass of ammonium sulphate is calculated as follows:
Molar mass = (2 × molar mass of N) + (8 × molar mass of H) + (1 × molar mass of S) + (4 × molar mass of O)
4. Calculate the mass of ammonium sulphate using the number of moles obtained in step 2 and the molar mass of ammonium sulphate.
By following these steps, you can calculate the mass of ammonium sulphate.