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:

Sulfur forms two chlorides,$S_2Cl_2$ and $SCl_2$. The equivalent mass of sulfur in $SCl_2$ is $16$. What is the equivalent mass of sulfur in $S_2Cl_2$?

Among $10^{-9} \ g$ (each) of the following elements,which one will have the highest number of atoms?
Element: $Pb, Po, Pr$ and $Pt$

If the mass of an electron is halved,the mass of a proton is doubled,and the mass of a neutron is $3/4$ of its original mass,then what will be the new atomic mass of an $O^{16}$ atom?

Equivalent weights of $X_2Y$ and $X_2Y_3$ are $38$ and $18$ respectively. Find the atomic masses of $X$ and $Y$:-

If $1.2 \, g$ of a metal displaces $1.12 \, L$ of hydrogen at $STP$,the equivalent weight of the metal would be: