A) \[7.7\times {{10}^{20}}\,molecules\]
B) \[7.05\times {{10}^{23}}\,molecules\]
C) \[5.07\times {{10}^{23}}molecules\]
D) \[6.023\times {{10}^{23}}\,molecules\]
E) None of these
Correct Answer: B
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