Chemistry

Atomic Mass

Molecular Mass

# Molar mass relationship?

###### Wiki User

###### April 25, 2008 8:22AM

n=m/M

number of moles = mass (in grams) divided by molar mass (as found on periodic table)

## Related Questions

###### Asked in Math and Arithmetic, Chemistry, Percentages, Fractions, and Decimal Values, How To

### How to find the percent of water in a hydrate?

1. Find the molar mass of the hydrate.
Find the molar mass of the water molecules (18.01528 x # water
molecules) and of the anhydrate; add the values together to find
the molar mass of the hydrate.
Molar Mass Water + Molar Mass Anhydrate = Molar Mass Hydrate
2. Find the percent of water in hydrate.
Divide the molar mass of water by the molar mass of hydrate;
multiply by 100%.
- Mass water
Mass hydrate x 100%