chemical equations

Question 1

is 5.6g of iron and 3.2g of sulphur fully react, how much iron sulphide will form?

Answer 1

8.8g of iron sulphide will form because the [mass of reactants will always equal the mass of the products.] this is because [atoms cannot be lost or made in chemical reactions.]

Question 2

the law of the conservation of mass

Answer 2

during a chemical reactions, no atoms are created or destroyed, so the mass of products is the same as the mass of reactants.

Question 3

what do the state symbols (s), (l), (g) and (aq) stand for?

Answer 3

(s) = solid
(l) = liquid
(g) = gas
(aq) = aqueous, dissolved in water, solution