How many grams are there in 1.5 x10^25 molecules of CO2?

Question

My son got 1.1 x 10^6 grams is this correct?

Answer 1

Nope. One mole has 6.022x10^23

moles CO2=(1.5e25)/(6.022e23)=24.9 moles

Answer 2

(1.5e25)*(44.01) then divided 6.02*10^23 from both sides
The answer would be 1096.56 g CO2

Answer 3

The correct answer is 1097g

Answer 4

1.5 x 10^25 molecules (1g/6.02x10^23) = 1096g