A) \[6\times {{10}^{23}}\]
B) \[2.69\times {{10}^{19}}\]
C) \[3\times {{10}^{23}}\]
D) None of these
Correct Answer: B
Solution :
The no. of molecules present in 1ml of gas at STP is known as Laschmidt number. 22400ml of gas has total no. of molecules \[=6.023\times {{10}^{23}}\] 1ml of gas has total no. of molecules \[=\frac{6.023\times {{10}^{23}}}{22400}\] \[=2.69\times {{10}^{19}}\].
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