A) \[2\times {{10}^{16}}\]
B) \[3\times {{10}^{15}}\]
C) \[3.86\times {{10}^{11}}\]
D) \[5\times {{10}^{11}}\]
E) \[2.5\times {{10}^{12}}\]
Correct Answer: C
Solution :
\[PV=nRT\] \[\Rightarrow \]\[(1.2\times {{10}^{-10}}\times 13.6\times {{10}^{3}}\times 9.8)\times {{10}^{-4}}\] \[=n\times 8.31\times (273+27)\] \[\therefore \]number of moles \[n=6.42\times {{10}^{-13}}\] Hence, number of molecules \[=6.42\times {{10}^{-13}}\times 6.02\times {{10}^{23}}\] \[=3.86\times {{10}^{11}}\]You need to login to perform this action.
You will be redirected in
3 sec