5g of the mixture of gold and zinc metals are dropped into 20% of a dilute solution of HCl to form 1.12L of gas at STP.
( H =1, Zn= 65, Cl =35.5, Au =108, at STP: 2g of H2 has 22.4L))
a.Find the mass of zinc metal
b.Find the mass of gold metal
c.Find the mass of the acidic solution