Based on your conductivity values, do the Group A compounds appear to be molecular, ionic, or weak acids? Would you expect them to partially dissociate, completely dissociate, or not dissociate at all ?

See Explanation

Explanation:

If we consider the conductivity values of group A compounds, we will notice that all group A compounds all possess a very high conductivity values each.

These high conductivity values are consistent with ionic compounds which completely dissociate in solution thereby making mobile ions available.

Hence, group A compounds are ionic and completely dissociate in solution.

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2