2. you need to prepare 150 ml of 150 mm aqueous solution of magnesium chloride hexahydrate. how much of the compound should you weigh? (mgcl2-4h20) i micromolar: 10-m 50, 150mm=16*10-4 m-molesse -.6x10-4. thules/.150l - 0.225x10-4 so, you should weigh (4.574 mg imol of magnesium chloride hexahydrate - 203.30279 1950, 0.228 x 10-4 moles of macl, 68,0 = 203.3027 x 0.225 x 10-4 = 0.004574310159: 4.574 mg

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.

How might this scientific phenomena be explained? a paper clip floats on water.

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?