Read the chemical equation. Fe2O3 + CO → Fe + CO2

If 2 moles of Fe2O3 react with 9 moles of CO, how many moles of each product are formed?

1 mole Fe and 2 moles CO2
2 moles Fe and 3 moles CO2
4 moles Fe and 6 moles CO2
6 moles Fe and 9 moles CO2

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.