A) \[6.02\times {{10}^{24}}\]
B) \[6.02\times {{10}^{22}}\]
C) \[5.42\times {{10}^{24}}\]
D) \[5.42\times {{10}^{23}}\]
Correct Answer: C
Solution :
Number of molecules = number of moles\[\times \,{{N}_{A}}\] \[=\frac{180}{20}\times 6.02\times {{10}^{23}}\] \[(\because \,Mol\,wt.\,of\,{{D}_{2}}O=20)\] \[=5.42\times {{10}^{24}}\]
You need to login to perform this action.
You will be redirected in
3 sec
