When aluminum metal reacts with copper (ll) sulfate to produce aluminum sulfate and copper metal, what is the coefficient for copper(ll) sulfate when the equation is balanced?

The coefficient for copper (II) sulfate is 3 when the equation is balanced.

Explanation:

This is the reaction:

3Al(s)  +  3CuSO₄ (aq)  → 3Cu(s) + Al₃(SO₄)₃ (aq)

the answer is barium and copper bromide

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.