What is mol of 5.6 litres of O2 at STP?

1.	What is mol of 5.6 litres of O2 at STP?
Answer» \xa0First and foremost, keeping in mind that at room temperature, Oxygen is a gas.So, Volume of Oxygen(O2) given = 5.6L.Finding moles, Moles=Volume/22.4.Moles= 5.6/22.4=1/4moles.So, finding mass of O2= moles × Mol. Wt.Mass( in grams) = 1/4 × 32. We have taken 32 as oxygen is is combined state O2, so 16×2=32.We get, mass =8 grams.

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