Question

When carbon dioxide and carbon react the balanced equation is Co2+C--------------2Cq
Calculate the mass of carbon monoxide formed from 4.4g of carbon dioxide

Answer 1

That is CO2, not Co2. CO is carbon monoxide. Co2 is diatomic cobalt.
CO2 + C ==> 2CO
mols CO2 = grams/molar mass = ?
Using the coefficients in the balanced equation, convert mols CO2 to mols CO
Now convert mols CO to grams CO. g CO = mols CO x molar mass CO