Question

One mole of oxygen gas at STP is equal to :

• A. $6.022\times {10}^{23}$ molecules of oxygen
• B. $6.022\times {10}^{23}$ atoms of oxygen
• C. $16$ g of oxygen
• D. $32$ g of oxygen

Answer 1

Answer: (A), (D)

$6.022\times {10}^{23}$ molecules of oxygen
$32$ g of oxygen

One mole of oxygen contains $6.022\times {10}^{23}$ molecules or $2\times 6.022\times {10}^{23}$ atoms of oxygen.
Its weight is equal to molecular weight which is $32$ g/mol.