# Question c695a

Apr 21, 2017

See below.

#### Explanation:

a) ${\text{1Fe" + "1CuSO"_4 →"1Cu" +"1FeSO}}_{4}$

This is a single replacement reaction, because an $\text{Fe}$ atom replaces a $\text{Cu}$ atom in ${\text{CuSO}}_{4}$.

b) "Ni"("NO"_3)_2 + "NaCl" →# No Reaction.

There is no reaction because all the substances are soluble in water.

c) $\text{2Mg + 1O"_2 → "2MgO}$

This is a combustion reaction because the magnesium is combining with the oxygen to form the oxide,