One mole of oxygen gas at \( \mathrm{STP} \) is equal to: (A) \( 6.022 \times 10^{23} \) molecul...

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One mole of oxygen gas at \( \mathrm{STP} \) is equal to:
(A) \( 6.022 \times 10^{23} \) molecules of oxygen
(B) \( 6.022 \times 10^{23} \) atoms of oxygen
(C) \( 16 \mathrm{~g} \) oxygen
(D) 32 g oxygen
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