A 0.0106-mol sample of urea,NH2CONH2,contains
A) 6.02 × 1023 molecules.
B) 2.55 × 1022 molecules.
C) 5.10 × 1022 atoms.
D) 2.55 × 1023 atoms.
E) 1.06 × 1024 atoms.
Correct Answer:
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