Calculate the number of moles of iron (III) oxide (Fe 2 O 3 ) produced from 112 L of oxygen (O 2 ) in the following reaction

4Fe(s) + 3O2 (g) = 2Fe2O3 (s)

3.33 moles is the required answer.

Explanation:

We're going to use proportion to find the number of moles of iron oxide.

Actual no. of moles of oxygen =   (Since one mole at STP = 22.4 L)

= 5

Putting the values in the proportion.

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hcl + naoh → h2o + nacl

explanation:

hcl + naoh → h2o + nacl   is the reaction that is correctly balanced.

however, pcl3 + h2 → ph3 +3hcl, 2ca+ 3cl2 → cacl3, and c5h12 + 5o2 → 5co2 + 6h2o are not correctly balanced.