Question

calculate the number of molecules present in 22g of co2

Answer 1

no of mole=given mass÷molecular mass
given mass=22g
molecular mass=44g
22÷44=0.5 mol
no of molecules=no of mole ×6.022×10^23
0.5×6.022×10^23
solve it for the Solution

Answer 2

Hii..

Molar mass of CO2 =44g
Therefore moles in 22g CO2= 22/44 =1/2 or 0.5 moles
__________
Now,
One mole has 6.022×10²³ molecules
Hence,
molecules in 1/2moles of CO2 =6.022×10²³×1/2
=3.011×10²³molecules..
__________
Your answer is that 22g of CO2 has 3.011×10²³ molecules

_______________

Hope this helps!