One atomic mass unit $(amu)$ is equal to:

The approximate mass of a tritium oxide molecule is $............$ $amu$.

$3.011 \times 10^{22}$ atoms of an element weigh $1.15 \ g$. The atomic mass of the element is: (in $amu$)

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 ........... $g$.

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

In order to prepare one litre of a $1 \ N$ (normal) solution of $KMnO_4$,how many grams of $KMnO_4$ are required if the solution is to be used in an acidic medium for oxidation?