Question

$8g$ of $O_2$ has the same number of atoms as

• A. 7 g CO
• B. 14 g of CO
• C. 22 g of CO2
• D. 44 g of CO2

Answer 1

The correct option is A

7 g CO

No of atoms = $\frac{W}{M}\times N\times atomicity$

$8g$ oxygen = $\frac{8}{32}\times N\times 2$ = $0.5N$

$14gCO$ = $\frac{7}{28}\times N\times 2$ = $0.5N$