Reacting Masses
- Created by: Lily04
- Created on: 20-04-17 13:58
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Relative Atomic Mass, Ar:
Each element in he periodic table has two numbers. The larger number is the mass number.
Relative Formula Mass, Mr
The relative formula mass of a compound is the sum of the relative atomic masses of all the atoms present in the formula.
Follow these steps to calculate Mr:
- Write down the formula of the compound.
- Multiply the number of atoms of each element in the formula by its Ar
- Add them all up.
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