DOUBLE REPLACEMENT PROBLEMS. Predict opposite side and balance equation. Cu2Cl2, +SnBr4 to
NIF3+MgSo4 to
AgCl + Al(NO3)3 to
SrCl2 +K(OH) to
V(C2,H3,O2,)3 +Zn(OH)2 to

Any answer helps thanks ahead of time

quartz

explanation:

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