$0.84 \, g$ of a metal hydride contains $0.04 \, g$ of hydrogen. What is the equivalent mass of the metal?

Assertion : Equivalent weight of a base $= \frac{\text{Molecular weight}}{\text{Acidity}}$
Reason : Acidity is the number of replaceable hydrogen atoms in one molecule of the base.

The equivalent weight of $FeS_2$ in the reaction $FeS_2 \to Fe_2O_3 + SO_2$ is (where $M$ is the molecular weight of $FeS_2$):

The weight of $1 \ L$ of an unknown gas at $N.T.P.$ is $1.25 \ g$. Which of the following gases can be identified from the given information?

When $1.0 \ g$ of a metal nitrate is converted into $0.86 \ g$ of metal sulfate,what is the equivalent weight of the metal?

$1 \ u \ (amu)$ is equal to