Question

Help me solve the chemistry problem, I will be very grateful

When 40 g of iron oxide (fe₂o₃) reacted with carbon, 44 g of carbon dioxide was released. Determine the mass fraction of impurities in the sample of iron oxide.

Answer 1

The problem can be solved by first calculating the moles of carbon dioxide released from the reaction:
n(CO2) = (44g x 1mol/44g) = 1 mol

Next, we can find the number of moles of iron oxide present in the sample by considering the equation of the reaction and using the mole-to-mole ratio:
n(Fe2O3)/n(CO2) = (40g x 1mol/40g)/1mol = 1/1

The number of moles of iron oxide is then 1. We can then calculate the mass fraction of