The equivalent weight of a metal is $4.0$. The vapour density of its chloride is $59.25$. Its atomic weight is

$4 \, g$ of copper is dissolved in concentrated $HNO_3$. Upon strong heating of the resulting copper nitrate solution,$5 \, g$ of its oxide is obtained. The equivalent weight of copper is ...... .

Chlorine has two isotopes $^{37}Cl$ and $^{35}Cl$ with percentage abundance of $25\%$ and $75\%$ respectively. Find the average atomic mass of chlorine.

If $m_1 \ g$ of metal $A$ displaces $m_2 \ g$ of another metal $B$ from its salt solution,and their equivalent weights are $E_1$ and $E_2$ respectively,how is the equivalent weight of $A$ expressed?

The atomic weight of $Ne$ is $20.2$. It is a mixture of $Ne^{20}$ and $Ne^{22}$. What is the relative abundance of the heavier isotope (in $\%$)?

$8 \ g$ of a metal reacted with oxygen to form $9 \ g$ of its oxide. What is the weight (in $g$) of the metal required to react with $8 \ g$ of hydrogen? $(H=1.0)$