Question

with the balanced equation Fe2O3 + 3CO = 2Fe + 3CO2How many moles of Carbon dioxide can be produced from 68 grams of Fe2O3?

Answer 1

1.29 moles of carbon dioxide can be produced.

Step-by-step explanation:

1st) It is necessary to convert 68g of Fe2O3 into moles, by using the molar mass of Fe2O3 (159.7g/mol):

`68g*(1mole)/(159.7g)=0.43moles`

Now we know that 68g of Fe2O3 are equal to 0.43moles.

2nd) From the balanced equation we know that 3 moles of carbon dioxide (CO2) are produced from 1 mole of Fe2O3. With a mathematical rule of three we can calculate the moles of CO2 that will be produced from 0.43 moles of Fe2O3:

`\begin{gathered} 1moleFe_2O_3-3molesCO_2 \\ 0.43moleFe_2O_3-x=(0.43moleFe_2O_3*3molesCO_2)/(1moleFe_2O_3) \\ x=1.29molesCO_2 \end{gathered}`

So, 1.29 moles of carbon dioxide can be produced.