The atomic mass of an element is $27$. If its valency is $3$,what is the vapor density of its volatile chloride?

On reduction with hydrogen,$3.6 \, g$ of an oxide of a metal left $3.2 \, g$ of metal. If the equivalent weight of the metal is $32$,the simplest formula of the oxide would be:

The equivalent weight of a divalent metal is $W$. The molecular weight of its chloride is...

The weight of $H_2SO_4$ in $150 \ mL$ of $N = 1/7$ solution is ........ $g$.

$1 \ g$ of hydrogen combines with $80 \ g$ of bromine. $1 \ g$ of calcium (valency $= 2$) combines with $4 \ g$ of bromine. The equivalent weight of calcium is ...

In nature,carbon exists as a mixture of $C^{12}$ and $C^{13}$. The average atomic mass of carbon is $12.011$. What is the percentage abundance of $C^{12}$ in nature?