In the following change, 3Fe + 4H_(2)O rarr Fe_(3)O_4 + 4H_2If the atomic mass of iron is 56, then its equivalent mass will be :

In the following change, 3Fe + 4H_(2)O rarr Fe_(3)O_4 + 4H_2If the ato

1.	In the following change, 3Fe + 4H_(2)O rarr Fe_(3)O_4 + 4H_2If the atomic mass of iron is 56, then its equivalent mass will be :
Answer» 42 21 63 84 Solution :`E=M/3` `3overset(0)(FE) rarr OVERSET(+8/3)(Fe_(3)O_4), E=(56)/(8/3)=21`