If \[{{10}^{21}}\]molecules are removed from 200mg of \[C{{O}_{2}}\], then the number of moles of \[C{{O}_{2}}\]left are [IIT 1983]

If \[{{10}^{21}}\]molecules are removed from 200mg of \[C{{O}_{2}}\],

1.	If \[{{10}^{21}}\]molecules are removed from 200mg of \[C{{O}_{2}}\], then the number of moles of \[C{{O}_{2}}\]left are [IIT 1983]
A.	\[2.85\times {{10}^{-3}}\]
B.	\[28.8\times {{10}^{-3}}\]
C.	\[0.288\times {{10}^{-3}}\]
D.	\[1.68\times {{10}^{-2}}\]
Answer» B. \[28.8\times {{10}^{-3}}\]

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If \[{{10}^{21}}\]molecules are removed from 200mg of \[C{{O}_{2}}\], then the number of moles of \[C{{O}_{2}}\]left are [IIT 1983]

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