The molecular weight of a tribasic acid is $W$. Its equivalent weight is:

The specific heat of a metal is $0.16$,its approximate atomic weight would be

Assertion : The normality of $0.3 \ M$ aqueous solution of $H_3PO_3$ is equal to $0.6 \ N$.
Reason : Equivalent weight of $H_3PO_3 = \frac{\text{Molecular weight of } H_3PO_3}{3}$

The mass of one molecule of oxygen is equal to $..... \ kg$.

Calculate the atomic mass (average) of chlorine using the following data:

Isotope	$\%$ Natural Abundance	Molar Mass $(g/mol)$
$^{35}Cl$	$75.77$	$34.9689$
$^{37}Cl$	$24.23$	$36.9659$

(in $u$)

What is the average atomic mass of chlorine if its two isotopes $^{35}Cl$ and $^{37}Cl$ exist in a relative abundance of $75\%$ and $25\%$ respectively?