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

After cloud droplets form, what must happen to them for precipitation to occur?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together