The equivalent weight of a certain trivalent element is $20$. The molecular weight of its oxide is:

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

Consider the following data:

Element	Atomic mass
$A$	$12.01$
$B$	$35.5$

$A$ and $B$ combine to form a new substance $X$. If $4 \ mol$ of $B$ combine with $1 \ mol$ of $A$ to give $1 \ mol$ of $X$,then the weight of one mole of $X$ is ........... $g$.

$1 \, g$ 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

If a metal oxide contains $32\%$ oxygen,what is the equivalent mass of the metal?

Atoms consist of protons,neutrons,and electrons. If the mass of neutrons were made half and the mass of electrons were made two times their actual masses,then the atomic mass of $_6C^{12}$ would: