I NEED HELP WTIH 1 AND 2 QUESTIONS IN IMAGE

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?