In a similar Exp. 9 experiment, a calibration plot of absorbance vs. concentration of Red 40 dye (ppm) was obtained with the slope of the best-fit straight line as 0.038 ppm–1 The diluted unknown sports drink solution had an absorbance of 0.86. What is the concentration (ppm) of the Red 40 dye in the dilute unknown sports drink?

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

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.