1C.3

Question 1

the logic with reacting masses

Answer 1

in balanced equations, we know that each side has a balanced number of atoms/electrons/neutrons/protons. now the same claim can be said about the mass. so each reactant side and the products in a balanced equation should have equal mass since it isn’t created nor destroyed.

Question 2

what is hydrate

Answer 2

is a compound containing water of crystallization

Question 3

what is the formula for ammonia

Answer 3

N2 +3H2 —> 2NH3

Question 4

what is the formula for al + o

Answer 4

4Al + 3O2 ——> 2Al2O3

Question 5

what do we do in hydrated solution when calculating thee Mr?

Answer 5

we use the number of moles