Hello,

I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar mass of the water as well, why or why not?

yes, the water of hydration is part of the mass of the hydrated molecule.

To find the molar mass of ferrous ammonium sulfate ([NH4]2[Fe][SO4]2·6H2O), you should consider the molar mass of water as well. This is because the compound contains 6 water molecules (6H2O) as part of its structure. The molar mass of water (H2O) is 18.02 g/mol.

To calculate the molar mass of the compound, you need to add up the molar masses of all the individual atoms. Here is the step-by-step process:

1. Calculate the molar mass of each element:
- Hydrogen (H): 1.01 g/mol
- Nitrogen (N): 14.01 g/mol
- Sulfur (S): 32.07 g/mol
- Oxygen (O): 16.00 g/mol
- Iron (Fe): 55.85 g/mol

2. Determine the number of atoms for each element in the formula:
- [NH4]2[Fe][SO4]2·6H2O contains:
- 2 ammonium ions (NH4+), so 2*NH4 = 2*14.01 g/mol
- 1 iron ion (Fe), so 1*Fe = 55.85 g/mol
- 2 sulfate ions (SO42-), so 2*SO4 = 2*(32.07 g/mol + 4*16.00 g/mol)
- 6 water molecules (H2O), so 6*H2O = 6*18.02 g/mol

3. Calculate the total molar mass by adding up all the contributions from each element:
Total molar mass = [2*(14.01 g/mol)] + [55.85 g/mol] + [2*(32.07 g/mol + 4*16.00 g/mol)] + [6*(18.02 g/mol)]

Note: It is important to consider the molar mass of water (H2O) because it contributes to the overall molar mass of the compound.

Hello!

To find the molar mass of ferrous ammonium sulfate [NH4]2[Fe][SO4]2.6H2O, you need to consider the molar mass of both the compound and the water molecules.

The molar mass is the mass of one mole of a substance and is expressed in grams per mole (g/mol). In this compound, the .6H2O denotes that there are six water molecules associated with each formula unit of the compound.

When calculating the molar mass of a compound, you add up the atomic masses of each element present in the compound. The atomic masses of the elements can be found on the periodic table.

For [NH4]2[Fe][SO4]2, you need to consider the molar masses of ammonium (NH4), iron (Fe), and sulfate (SO4). Add up the molar masses of each element, multiplied by their respective subscripts (i.e., the number of atoms of each element in the compound), to find the molar mass of [NH4]2[Fe][SO4]2.

In addition to the compound, you also need to consider the molar mass of the water molecules. The molar mass of water (H2O) is calculated by adding up the atomic masses of hydrogen (H) and oxygen (O) and multiplying by 2. Since there are six water molecules associated with one formula unit, you need to multiply the molar mass of water by 6 to find the contribution from the water molecules.

Therefore, to find the molar mass of [NH4]2[Fe][SO4]2.6H2O, include the molar masses of [NH4]2[Fe][SO4]2 compound and 6H2O.

I hope this helps! Let me know if you have any further questions.