又一道英文化学题..Which one of the following is not the same number
又一道英文化学题.. Which one of the following is not the same number as the rest? A.The number of molecules in 4 moles of CO2. B.The number of hydrogen atoms in 2 moles of H2O. C.The number of chloride ions in 4 moles of CaCl2. D.The number of hyfrogen atoms in 1 mole of C3H8. 请给出理由,