Some Basic Concepts Of Chemistry Question 309
Question: The number of oxygen atoms in 4.4 g of $ CO _2 $ is approx. [CBSE PMT 1990]
Options:
A) $ 1.2\times 10^{23} $
B) $ 6\times 10^{22} $
C) $ 6\times 10^{23} $
D) $ 12\times 10^{23} $
Show Answer
Answer:
Correct Answer: A
Solution:
44g of CO2 has $ 2\times 6\times 10^{23} $ atoms of oxygen 4.4g of CO2 has = $ \frac{12\times 10^{23}}{44}\times 4.4 $
$ =1.2\times 10^{23} $ atoms.
