2Al+3H2SO4→Al2(SO4)3+3H2î m(H2SO4)=m(H2SO4)*10%/100%=300*10/100=30г n(Al)=m(Al)/M(Al)=8/27=0.296 моль
n(H2SO4)=m(H2SO4)/M(H2SO4)=30/98=0.306 моль
0,296:2=х:3
х=n(H2SO4)=0,296*3/2=0,444 моль
V(H2SO4)=n(H2SO4)*22.4 л/моль=0,444*22,4=9,9456 л