You are asked to make 12 moles of iron(Fe) from iron oxide and carbon monoxide. Fe2O3(s) + 3CO(g)→2Fe(l) + 3CO2(g)

Approximately how many moles of iron oxide(Fe2O3) is used?

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.