Which of the following statements is incorrect? Molecular mass is expressed in a
ID: 813477 • Letter: W
Question
Which of the following statements is incorrect?
Molecular mass is expressed in atomic mass units
Formula mass compares the mass of one formula unit of a substance to the mass of one atom of carbon-12
Atomic mass has units of grams per atom
Both molecular mass and formula mass use carbon-12 as a reference standard
Sodium chloride, an ionic compound, is said to have a formula weight, but not a molecular weight
a.Molecular mass is expressed in atomic mass units
b.Formula mass compares the mass of one formula unit of a substance to the mass of one atom of carbon-12
c.Atomic mass has units of grams per atom
d.Both molecular mass and formula mass use carbon-12 as a reference standard
e.Sodium chloride, an ionic compound, is said to have a formula weight, but not a molecular weight
Explanation / Answer
c.
Atomic mass has units of grams per atom
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