Select the correct statement regarding the following balanced equation

2mg + o2 > 2mgo

1)3 moles of mg will produce 6moles of mgo

2)when 100 grams of mg reacts with excess o2, 100 grams of mgo forms

3)for every mole of mgo produced, half the number of moles of o2 is consumed

4) 8 moles of o2 requires 4 moles of mg in order to react completely

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.

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures