Question

no. of oxygen molecules in 8.8g of CO2

Answer 1

Mass of CO2 given is 8.8
molar mass =44
Mole =mass/molar mass
=8.8/44=0.2 mol
No of Oxygen molecule
=
$0.2 \times 6.022 \times {10}^{23}$
$1.2 \times {10}^{23}$
molecules