Stoichiometry

5. the mass of an atom
6. the number preceding the substances in a chemical equation
9. using a balanced chemical equation to calculate the amount of reactants and products is called
12. representation of a chemical reaction using symbols, numbers, etc.
13. the simplest form of the formula
15. What type of reaction? 2HgO -> 2Hg + O
16. In a chemical equation, these substances are left of the arrow
18. the amount of a substance actually produced at the end of a chemical reaction
20. What type of reaction? C H O + 4O -> 3CO + 3H O
22. 6.02 x 10

1. the mass of one mole of the substance
2. In a chemical equation, these substances are right of the arrow
3. these problems tell you how much of any given product you get by reacting any given amount of reactants
4. percentage of each element in a compound
7. the total mass of the empirical formula
8. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
9. What type of reaction? O + H -> H O
10. a type of reaction where bonds between atoms are formed or broken
11. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
14. the true formula
17. 6.02 x 10
19. What type of reaction? FeS + 2HBr -> 1FeBr + H S
21. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O