Question

From 200 mg of CO2 . 10^21 molecules are removed. How many moles of CO2 remain​

Answer 1

One mole of atoms =6.023×10

23

atoms = Gram atomic mass of element

44 grams of CO2

=1moleCO2

=6×1023 molecules of CO2

200mg= 44×1000200×1

moles= 44×1000200×1023×6.023 molecular of CO2

=27.37×1020 molecular of CO2

=2.737×1021

molecules of CO2

molecules left =1.737×1021

molecular of CO2

moles of CO2

left =

6.023×10231.737×104

=0.29×10

moles of CO2

=2.9 mill moles