A) \[6.02\times {{10}^{23}}\] atoms of C
B) \[6.02\times {{10}^{23}}\] atoms of O
C) \[18.1\times {{10}^{23}}\] atoms of \[C{{O}_{2}}\]
D) 3 g-atoms of \[C{{O}_{2}}\]
Correct Answer: A
Solution :
Key Idea: One \[C{{O}_{2}}\] molecule is made of one carbon atom and two oxygen atoms. One mole of \[C{{O}_{2}}\] contains \[6.023\times {{10}^{23}}C\]atoms \[\therefore \] One mole of \[C{{O}_{2}}\] contains \[2\times 6.023\times {{10}^{23}}\] oxygen atoms
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