Pane (2) An analytical balance is used to measure the mass of 200ml of water in triplicate. The following measurements are recorded: 0.19838, 0.1990g, 0.1884g. (A) Calculate the mean value for these three mass determinations. (1pt) 0.1983g +0.19908 +0.18448 +0.1939g 3 (B) Use the mean value from (A) to determine the percent error. (1pt) (3) Trypan blue was purchased from a vendor as a 0.4% solution. (A) How many milligrams would that be in 100ml of water? (0.5pts) (B) What is the molarity of that 0.4% solution if the molecular weight of trypan blue is 872.88 grams/mole? (1pt) (C) What would the concentration of trypan blue be if 50ul of that original solution was diluted with 450ml water, and then 40ul of that diluted trypan blue solution was diluted with 160 l water? (1pt)