Which of the following is the best explanation of why the mass of an atom is usually expressed in atomic mass units rather than grams?
A)An atomic mass unit is only used for carbon-12
B)The mass of one milliliter of water is one gram
C)The mass in grams is not known for atoms
D)The mass of an atom in grams is inconveniently small
E)Metric units such as grams are not applicable to atoms

Question

Quizplus · Accepted Answer

The mass of an atom in grams is very small (on the order of 10^-23 grams), making it inconvenient to work with. Expressing the mass in atomic mass units (which are defined in terms of the mass of a carbon-12 atom) allows for more convenient and practical measurements.

Which of the Following Is the Best Explanation of Why