Question

If 7.95 x 10 to the 23rd molecules of carbon are reacted in

Reaction A, how many mol of carbon dioxide, CO₂,
will be produced?
2²
Rxn A: 2Fe₂O3 + 3C->4Fe +3CO₂

Answer 1

First, we need to convert the number of molecules of carbon to moles. To do this, we use Avogadro's number (NA), which is the number of particles in one mole of a substance.

7.95 x 10^23 molecules of C * (1 mole of C / 6.02 x 10^23 particles) = 1.32 moles of C

Next, we can use the coefficients in the balanced chemical equation to determine the number of moles of CO2 produced:

2 moles of Fe2O3 react with 3 moles of C to produce 3 moles of CO2, so

1.32 moles of C will produce (1.32 moles of C * 3 moles CO2 / 3 moles C) = 1.32 moles of CO2.

Therefore, 1.32 moles of CO2 will be produced if 7.95 x 10^23 molecules of carbon are reacted in Reaction A.