The mass of $1$ mole of electrons is

In how many grams of $CO_2$ is the number of $C$ atoms equal to $1.3699 \times 10^{23}$?

Assertion : Equal moles of different substances contain same number of constituent particles.
Reason : Equal weights of different substances contain the same number of constituent particles.

The molar mass of $CO_2$ is $44 \ g/mol$. Given that the Avogadro constant is $6.022 \times 10^{23} \ mol^{-1}$,the mass of one molecule of $CO_2$ is ..... $\times 10^{-23} \ g$.

$0.1$ mole of compound $'S'$ will weigh $.......... \ g$.
(Given molar mass in $g \ mol^{-1} \ C: 12, H: 1, O: 16$)

Calculate the mass in $kg$ of $2.5 \ mol$ of ammonia.