Calculate the number of molecules in 8 g of oxygen, O²​

1 moleculer mass of any gas contains 1 mole molecules….. for o2 … o2 has 32 gm moleculer mass …. No.of moles=given mass÷ moleculer mass

No. Of moles of o2= 8÷32= .25 moles

So no. Of molecules= .25 × 6.024×10^24

Explanation:Hope this helped you also may u i plz have brainlist? kind sir or ma'am?