Multiple Choice
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:
Verified
Correct Answer:
Verified
Q2: Of the following,the only empirical formula is<br>A)C<sub>4</sub>H<sub>10</sub>.<br>B)C<sub>4</sub>H<sub>8</sub>.<br>C)C<sub>5</sub>H<sub>14</sub>.<br>D)H<sub>2</sub>O<sub>2</sub>.<br>E)O<sub>3</sub>.
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