32.0 grams of the element oxygen:
(A) contain 6.02 x 1023 atoms of oxygen
(B) contain 1.204 x 1024 molecules of oxygen
(C) contain the same number of oxygen atoms as 18.0 g of water
(D) contain the same number of oxygen atoms as 72.0 g of water
(E) contain the same number of oxygen atoms as 90.0 g of water
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