In stage 1 of his lab, gunther adds 20 mg of solute into a solution. he stirs it and it completely dissolves. in stage 2, he adds 20 mg more of solute and stirs, but this time, some settles out. in stage 3, he then heats his solution, adds 20 mg more, and the solute completely dissolves. which best explains his experiment? stage 1 demonstrated a saturated solution, stage 2 demonstrated an unsaturated solution, and stage 3 demonstrated a supersaturated solution. stage 1 demonstrated an unsaturated solution, stage 2 demonstrated a saturated solution, and stage 3 demonstrated a supersaturated solution. stage 1 demonstrated a supersaturated solution, stage 2 demonstrated a saturated solution, and stage 3 demonstrated an unsaturated solution. stage 1 demonstrated an unsaturated solution, stage 2 demonstrated a supersaturated solution, and stage 3 demonstrated a saturated solution.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.