1.25 calculate reacting masses using experimental data and chemical equations

CALCULATING REACTING MASSES:

- 1. Write out the balanced equation.
- 2. For the bits you need, given in the question, write their relative formula mass and multiply them by the balancing numbers (numbers in front of the formulae).
- 3. The next bit is confusing, if the ratio was 1X : 2Y, you would divide 1X by 1 and 2Y by 1 to get how much 1 gram of X to reacts to make ... grams of Y.

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