Calculate the amount of hydrogen gas and zinc sulphate produced when 40gram of zinc reacts with sulphuric acid

Answer 1

Zn+H2SO4>>>H2 + ZnSO4

40 gram zinc= 40/atomicZ=40/65.4

the mole ratio of H2 and Zn is 1:1, so
gramsH2=40/65.4 * 2 = 80/65.4 grams

Answer 2

y2-y1
x2-x1
40×40-40=40