n=V/Vo; n=4,48l/22,4l/mol= 0,2mol H2
1mol 1mol 1mol 1mol
M + H2SO4---> MSO4 + H2
n=0,2...........n=.0,2...........................................0,2mol
n= m/M; 0,2= 8/M-----> M=40g/mol----> Ca
m= nxM; m=0,2molx98g/mol= 19,6g H2SO4
C/100=md/ms---> 50/100=19,6/ms..........................>calculeaza ms!!!!!