Some Basic Concepts Of Chemistry Question 328
Question: The number of molecules of CO2 present in 44g of CO2 is [BCECE 2005]
Options:
A) $ 6.0\times 10^{23} $
B) $ 3\times 10^{23} $
C) $ 12\times 10^{23} $
D) $ 3\times 10^{10} $
Show Answer
Answer:
Correct Answer: A
Solution:
wt of $ CO _2=44 $
mol wt of $ CO _2=44 $
No. of molecule $ =\frac{wt\text{. of }CO _2}{mol,wt,of,CO _2}\times 6.02\times 10^{23} $
$ =\frac{44}{44}\times 6.02\times 10^{23} $ $ =6.02\times 10^{23} $
