Problem: 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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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). 


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Problem Details

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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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Calculating Molar Mass concept. You can view video lessons to learn Calculating Molar Mass. Or if you need more Calculating Molar Mass practice, you can also practice Calculating Molar Mass practice problems.

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Based on our data, we think this problem is relevant for Professor Wallach's class at ODU.