Which contains more number of molecules?

1 Mole of CO₂ = 6.023 × 10²³ molecules
4 g hydrogen = $\frac{4}{2}\times 6.023\times {10}^{23}$

= 2 × 6.023 × 10²³ molecules
33.6L of oxygen at STP
$=\frac{33.6}{22.4}\times 6.023\times {10}^{23}$
= 1.5 × 6.023  10²³ molecules
6g helium = $\frac{6}{4}\times 6.023\times {10}^{23}$

= 1.5 × 6.023 × 10²³
= 1.5 × 6.023 × 10²³ molecule