All but one of the following statements is true. Which one is not true? A A mass

Question

All but one of the following statements is true. Which one is not true? A A mass (in grams) equal to the molecular mass (in atomic mass units) of a pure substance contains the same number of molecules, no matter what the substance is. B One mole of any pure substance contains the same number of molecules. C Avogadro's number of molecules of a pure substance and one mole of the substance have the same mass. D Ten grams of a pure substance contains the same number of molecules, no matter what the substance is. E Ten grams of a pure substance contains twice as many molecules as five grams of that substance.

Explanation / Answer

1st one is not true

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