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The Mass of an Atom of 12C Is Exactly 12

Question 51

Multiple Choice

The mass of an atom of 12C is exactly 12 atomic mass units. Which of the following describes a mole of 12C atoms?


A) a sample which contains 6.02 × 1023 atoms of 12C
B) a sample which weighs exactly 12.011 grams
C) both a and b
D) neither a nor b

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