-calculez masa de acid din solutia data
c=mdx100/ms
80/100=md/12,2---> md= 9.76gH2SO4
-ecuatia reactiei
2mol 1mol
2H2SO4+Cu---> CuSO4 + SO2 +2H2O
2x98g.....................160g
9,76........................x
x= 9,76x160/2x,98=.................gCuSO4.......calculeaza !!!
M,H2SO4=98g/mol; M,CuSO4= 160g/mol