ve a balance with a sensitive requirement of 7mg; 10,25,50 and 100ml graduated cylinder; and 1 oz apothecary and 4-ounce apothecary conical cylinder. What is the minimum measurable volume in ml using the graduated cylinder

A student weights out 3 samples of KHP to standardize a NaOH solution and added 100 mL to each flask. They ran out of time and placed the flasks in the storage cabinet for the week. The following week the flasks only contained 85 mL of solution. What should the student do? O a) Add 15 mL of water and continue. KHP does not evaporate. b) Start over. Some of the acid evaporated O c) Decrease the volume in the burette by 15 mL as well. d) Add more indicator to account for the decreased volume.

What is the normality of a solution made by dissolving 10.00 g of hydrogen phosphate, H3PO4 in water to a volume of 150 mL? Note: Please present complete solution. Express your final answers up to two (2) decimal places.

You measure 1.5232 g of oxalic acid on an analytical balance, add it to a 250-mL volumetric flask and add deionized H2O to a final volume of 250.0 mL. You measure 15.0 mL of the H2C2O4 solution with a 100-mL graduated cylinder and add it to a 125-mL Erlenmeyer flask.  Then you add two drops of the indicator, phenolphthalein, to the oxalic acid solution in the flask.  You dispense the NaOH solution from the buret into the flask (while swirling the flask) until you reach the endpoint.  At the endpoint, the solution in the flask turns light pink.  You repeat the titration two additional times for a total of three trials.  H2C2O4 (aq) + 2 NaOH (aq) --> Na2C2O4 (aq) + 2 H2O (l)                                                (I)              (II)                (III) Volume of H2C2O4 used  15.00 mL   15.00 mL   15.00 mL Molarity H2C2O4 standard solution  is 0.48 M how many Moles of NaOH are there in each trial?