which among the following contains 12 atoms of oxygen ?A. 6 molecules – InterviewSolution

1.

which among the following contains 12 atoms of oxygen ?A. 6 molecules of calcium oxideB. 6 molecules of waterC. 3 molecules of sodium bicarbonateD. 4 molecules of calcium carbonate

Answer» Correct Answer - D

D. 4 molecules of calcium carbonate.

Because 4 CaCO₃.

Since each molecule of CaCO₃ contains 3 atoms of Oxygen.

Therfore 4 molecults of CaCO₃contains 4x3 =12 atoms.

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