Which of the Following Statements Regarding Atoms, Molecules, and Moles

question 25

Multiple Choice

Which of the following statements regarding atoms, molecules, and moles is correct?

• A)Chemists are inherently lazy, so they weigh substances in order to avoid counting out the atoms or molecules in a sample.
• B)It would be possible for an individual to count out a mole of atoms or molecules if they had a few days to do it.
• C)A single grain of sand has about as many formula units of SiO₂ as there are sand grains on all of the beaches on Earth.
• D)A mole of HCl would have the same mass as a mole of NaCl, since they have the same number of particles.
• E)Since a mole of LiCl has a mass of 42.39 g, the average mass of a LiCl formula unit would be 42.39 mole.

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