Question

Write the chemical formulae of the following.
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate.

Answer 1

(a)
Thus, the formula of magnesium chloride is `MgCl_(2)`.
(b) Formula of calcium oxide (made of calcium Ca and oxygen O) :

Thus, the formula of calcium oxide is `CuO`.
(c ) Formula of copper nitrate (made of copper Cu and nitrate `NO_(3)`) :

Thus, the formula of copper nitrate is `Cu(NO_(3))_(2)`.
(d) Formula of aluminium chloride
(e ) Formula of calcium carbonate (made of calcium Ca and carbonate `CO_(3)`) :

Thus, the formula of calcium carbonate is `CaCO_(3)`.