Question

The number of oxygen atom present in 4.4gram of carbon dioxide is approximately????​

Answer 1

Explanation:

$moles \: of \: co2 = \frac{4.4}{44} = 0.1 \: moles$

Therefore , Number of molecules of Co2

$= > 0.1 \times 6.022 \times 10 {}^{23}$

$= > 6.022 \times 10 {}^{22} molecules$

But 1 molecule of CO2 contains 2 oxygen atoms.

Therefore , Number of Oxygen atoms

$= > 2 \times 6.022 \times 10 {}^{22}$

$= > 12.044 \times 10 {}^{22} atoms$

$= > 1.2 \times \: 10 {}^{23} atoms$