In the transformation $FeC_2O_4 \rightarrow Fe^{3+} + CO_2$,the equivalent weight of $FeC_2O_4$ is $M/n$. The value of $n$ is:

The equivalent weight of a divalent metal is $31.82$. The weight of one atom of this metal is:

The oxide of a metal has $32\%$ oxygen. Its equivalent weight would be

$A$ metal $(M)$ forms two oxides. The ratio $M:O$ (by weight) in the two oxides are $25:4$ and $25:6$. The minimum value of atomic mass of $M$ is

Atoms consist of protons,neutrons,and electrons. If the mass of neutrons were made half and the mass of electrons were made two times their actual masses,then the atomic mass of $_6C^{12}$ would:

The mass of one mole of a substance in grams is called ....... .