Calculating Masses in reactions

Calculating Masses in reactions

1. 3 VERY important steps

   • 1. Write out the balanced equation
   • 2. Work out Mr - just for the 2 bits you want
   • 3. Apply the rule: divide to get one, then multiply to get all
     • ( but you have to apply this first to the substance they give information about, and then the other one )

2. How to calculate reactant mass: Work out the ratio of reactant to product (or product to reactant) for the required situation. (You want the unknown on the top!) Work out the ratio of reactant to product (or product to reactant) from the masses given. Write them equal to each other. Rearrange the equation. Work out the answer.

3. Enter text here