What are the similarities and differences between polyatomic ions and monoatomic ions?

0.09 moles of sodium sulfate in 12 ml of solution

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

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.