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Q.

One gram-atom of oxygen is

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a

8 g of oxygen

b

16 g of oxygen

c

22.4 g of oxygen

d

1 g of oxygen 

answer is B.

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Detailed Solution

  •  one gram atom is equal to the mass of one mole of an element equal in grams to the atomic weight.

Thus, one gram-atom of oxygen will equal one mole of atom oxygen, which is 16g of oxygen as the molecular mass of an atom of oxygen is 16g.

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