Which of the following represents $180 \ g$ of water correctly?

Assertion $(A)$: Equal moles of different substances contain the same number of constituent particles.
Reason $(R)$: Equal weights of different substances contain the same number of constituent particles.
The correct answer is

The number of oxygen atoms in $4.4 \ g$ of $CO_2$ is,

In which case is the number of molecules of water maximum?

How many atoms are contained in $5.6 \ L$ of oxygen gas at $STP$?

$19.7 \ kg$ of gold was recovered from a smuggler. How many atoms of gold were recovered? (Atomic mass of $Au = 197 \ g/mol$)