We are asked to calculate the molar mass of a compound, Fe(NH4)2(SO4)2•6H2O(s).
In determining the molar mass of a compound, we must:
1. Identify the elements present in the compound.
2. Count the number of each element present in the compound.
3. Take the individual masses of the elements.
4. Multiply the mass of each element to its number and add all the masses (multiples of each).
What is the molar mass of Fe(NH 4)2(SO4)2•6H2O(s) (hint: you have to include the 6 water molecules in this hydrated compound)?
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