What mass of carbon is needed to make 132 grams of carbon dioxide?

Someone please answer this I’m stuck on this one as well

Atomic mass of carbon is approximately 12g, and the mass of carbon dioxide (from you) is indicated as 132 g.

CO2 means that 1 mole of carbon to 2 moles of oxygen would equal your amount of grams; therefore, oxygens atomic mass is 16 (16 x 2 = 32)

(C) 12 + (O*2) 32 = 44 g.mol

132 g (CO2) divided by 44 = 3 which would mean that there would be

3*12 = 36 Carbon g.mol in 132 g

However to find grams

Have to use this calculation:

n = m/Mr (moles = mass/molecular mass)

We know there are 3 moles of C in 132 grams of CO2 and that 3 x 12 (molecular mass of one mole of carbon) = 36

3 moles = m/36 g.mol

To find mass rearrange

Moles x molar mass = grams

3 mol x 36 g.mol = 108 grams of Carbon

108 grams of carbon in 132 grams of CO2

Hope that helps :)

What? i don’t understand