Determine if the following statements are true or false. 1. If there are 3 molecules as reactants, then there must be 3 molecules produced.

2. If you start with 10 atoms of sulfur in a chemical reaction, then you should have 10 atoms of S at the end of a reaction.

3. If a reaction starts with 10 atoms of H, 20 atoms of C, and 10 atoms of O, then when complete one molecule should have a total of 40 atoms in it.