Need ! what else should i write?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.