The atomic mass of a metal is $27$ and its equivalent mass is $9$. What is the formula of its chloride?

$5 \, mol$ of $AB_2$ weigh $125 \times 10^{-3} \, kg$ and $10 \, mol$ of $A_2B_2$ weigh $300 \times 10^{-3} \, kg$. The molar mass of $A$ $(M_A)$ and molar mass of $B$ $(M_B)$ in $kg \, mol^{-1}$ are:

The element whose $1$ atom has a mass of $10.86 \times 10^{-26} \ kg$ is

The equivalent weight of a divalent metal is $31.82$. The weight of a single atom is

Sulfur reacts with chlorine to form $S_2Cl_2$ and $SCl_2$. The equivalent mass of sulfur in $SCl_2$ is ................. $g/mol$.

$NaOH + H_3PO_4 \to NaH_2PO_4 + H_2O$; What is the equivalent weight of phosphoric acid in this reaction?