An unknown mixture is known to contain only Ba(OH)2 (MW=171.34 g/mole) and NaOH (MW=40.0 g/mole).  If the mixture is known to contain 45% by mass NaOH, and 8.0 grams of the mixture is dissolved completely in 50.0 ml of solution, answer the following. c).If 10.0 ml of a 0.2 M solution of Na2SO4 was added to the 50.0 ml solution, what would be the final concentration of Na+ in solution.

A 110.0value - mL buffer solution is 0.255M in NH3 and 0.395 M in NH4Br. The Kb alue for NH3 is 1.76 x 10^-5. What mass of HCI could be handled before the pH falls below 9.00 ?

B. You will need approximately 1 ml of the 100 µg/ml bromophenol blue (which is your most concentrated standard) to generate your standard curve. Calculate how much bromophenol blue stock solution and how much water you will combine to accomplish this. Make 1 ml of this solution using a 100-1000 μl micropipetter. Use the equation C₁V1=C2V2 μl of 1 mg/ml stock + μl of water = 1 ml of 100 µg/ml bromophenol blue

How many grams of CuSO4 would you use to make 1 L of an 8 g/L CuSO4 solution?