Some Basic Concepts Of Chemistry Question 274
Question: Which of the following contains maximum number of atoms [JIPMER 2000]
Options:
A) $ 6.023\times 10^{21} $ molecules of $ CO _2 $
B) 22.4 L of $ CO _2 $ at STP
C) 0.44 g of $ CO _2 $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
a. $ 6.023\times 10^{23} $ molecules of $ CO _2 $
No. of atoms $ =3\times 6.023\times 10^{21} $ = $ 18.069\times 10^{21} $ atoms b. 22.4L of $ CO _2 $
No. of atoms = $ 6.023\times 10^{23}\times 3 $ $ =18.069\times 10^{23} $ atoms c. 0.44gm of $ CO _2 $
No. of moles $ =\frac{0.44}{44}=\frac{1}{100}\times 6.023\times 10^{23} $ moles $ =6.023\times 10^{21} $ moles $ =3\times 6.023\times 10^{21} $ atoms $ 18.069\times 10^{21} $ atoms
