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

Accurate determination of atomic masses is done with the instrument called as

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

Which instrument is used to measure the atomic mass of an atom accurately?

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

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