0.0575g of KBr is in 500 ml of solution. what is the ppm concentration of K
Part A: A solution of 100 ml of 500 ppm quinine solution was prepared this more concentrated solution was used to prepare a desired 5ppm quinine solution. How much solid quinine dihydrate (MW= 782.92 g/mol) will be needed to prepare the 500 ppm quinine solution, as well as the volume of 500 ppm quinine solution needed to make the 5ppm solution. Part B: If 61.1mg of quinine sulfate dehydrate was used what is the actual concentration in the solution ?
What molarity of KBr (MM = 119.0 g/mol) is a 500. mL solution that contains 17.2 g of KBr?
A) Prepare 50 mL of a NaCI solution containing 1 ppm Na. - first prepare 250 mL of a 500 ppm Na solution in a 250 mL volumetric flask - dilute 1/500 to create 50 mL of 1 ppm Na solution in a 50 mL volumetric flask - you can check your calculations with the instructor before making the solution
A) Prepare 50 mL of a NaCI solution containing 1 ppm Na. - first prepare 250 mL of a 500...
What is the molar concentration of K+ in an aqueous solution that contains 793 mg/L (ppm) of K3Fe(CN)6? Do not use scientific notation in your answer.
What concentration of Br − Br− results when 601 mL 601 mL of 0.559 M KBr 0.559 M KBr is mixed with 687 mL 687 mL of 0.267 M FeBr 2 ? 0.267 M FeBr2?
100 mL of aqueous solution containing 2,4,6-trinitrotoluene (TNT) at an initial concentration of 0.05 ppm is shaken with 10 mL hexane. After the phase separation, it was determined that the organic phase has 0.4 ppm. What is the partition coefficient, and what is the percent extracted? If the equilibrium concentration (rather than initial concentration) is 0.05 ppm, this would simplify the calculation. What would then be the partition coefficient and percent extracted? (Please answer or provide something for the second...
A student weighs out a 14.4 g sample of KBr, transfers it to a 500. mL volumetric flask, adds enough water to dissolve it and then adds water to the 500. mL tick mark. What is the molarity of potassium bromide in the resulting solution? Molarity = M
38.6 g of K3P is dissolved in 500. mL water. What is the concentration of K+ ion?
What Volume (in mL) of KBr solution must be taken so it will contain 2.83x10^-5 moles of KBr? KBr solution is made by dissolving 0.42 grams of KBr in enough water to yield 17 mL of solution.
what is the mass concentration in mg/L and ppm of a solution containing 1 g of solids in 10 L of methanol? methanol= 0.792 g/mL