Section 2: Calculating the Mass of a Component
If you know the RMM of a component and the number of moles involved, you can calculate the mass of the component.
You need to prepare a solution containing 0.5 moles of Anhydrous Sodium Carbonate (RMM 106.0). How many grams of Anhydrous Sodium Carbonate do you need? Answer to one decimal place.
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You need 53.0 grams of Anhydrous Sodium Carbonate.
Number of Moles = Mass of Component
RMM
which rearranges to:
Mass of Component = Number of Moles x RMM
Mass of Anhydrous Sodium Carbonate = 0.5 x 106.0 g
Mass of Anhydrous Sodium Carbonate = 53.00 g
Mass of Anhydrous Sodium Carbonate = 53.0 g to one decimal place
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