Chlorine has two isotopes $^{35}Cl$ and $^{37}Cl$ with an average atomic mass of $35.5$. What is the ratio of their relative abundance respectively?

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

One gram of hydrogen is found to combine with $80 \ g$ of bromine. One gram of calcium (valency $= 2$) combines with $4 \ g$ of bromine. The equivalent weight of calcium is:

Sulphur forms the chlorides $S_2Cl_2$ and $SCl_2$. The equivalent mass of sulphur in $SCl_2$ is $....... \ g/eq$.

$71 \ g$ of chlorine combines with a metal to form $111 \ g$ of its chloride. The chloride is isomorphous with $MgCl_2 \cdot 6H_2O$. The atomic weight of the metal is:

The phosphate of a metal $M$ has the formula $M_3(PO_4)_2$. What is the formula for its sulphate?