If one mole of iron (iii) oxide is needed to react with three moles of carbon monoxide (co) in a reaction to produce two moles of iron and three moles of carbon dioxide, what is the mole ratio between the reactants?

1: 2

2: 1

2: 3

1: 3

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?