How much material would you weigh to make one liter of the following reagents:
500 ppm P in 0.1 N HCl from KH2PO4 and concentrated HCl (12N)
How much material would you weigh to make one liter of the following reagents: 500 ppm...
29. You have the following concentrated commercial reagents on hand; make 1 L of a 6 N reagent from each of them. What is the molarity of each concentrated reagent? How to make it? NFLOH sp. gr. = 0.90; 58% assay (V=1) H(CH3C00) sp. gr. = 1.05; 99% assay (v-1) 30. How much 0.02 N HSO, can you make from 200 mL of 4N HSO.? 31. How much Cuso, 8H20 will you need to weigh out to substitute for 120...
what alkene and other reagents would you use as a starting material to make the following alcohols? он 2 CH₃ CH3 H₃C он
How much of each of the following substances would you add to water to prepare 1.10 L of a 0.20 M solution? (a) H2SO4 from "concentrated" (18 M) sulfuric acid (b) HCl from "concentrated" (12 M) reagent (c) NiCl2 from the salt NiCl2·6 H2O (d) HNO3 from "concentrated" (16 M) reagent (e) sodium carbonate from the pure solid
Calculate how much KOH you will need to weigh out to make 250 mL of a 0.2M KOH solution. How much potassium hydrogen phthalate (molar mass 204.23 g/mol) do you need to weigh out if you want to use 20.00 mL of your standard 0.2000 M KOH solution to titrate the potassium hydrogen phthalate sample? Note: potassium hydrogen phthalate has ONE hydrogen that reacts with KOH. We often use KHP as our "simplified formula" for potassium hydrogen phthalate rather than...
You want to make 500 mL of 10 M NaOH solutions? How much NaOH do you have to weigh out? Walk me through the steps it takes to make this solution? During the weighing out process you weigh out 201.53 NaOH, what is your new molarity? Using your stock solution, you want to make a series of dilutions, you want 25 mL of the following concentrations of NaOH: 0.5 M ,1 M, 3 M, 7 M, 9 M. How much...
Show how you would make the following alkyne from the provided starting material. HO starting material product
Describe how you would prepare one liter 0.1 M phosphate buffer, pH = 2.5, given 0.1 M phosphoric acid and solid NaH2PO4.2H2O. pKa= 4.75
4a) Describe how you would prepare a 1-liter aqueous solution of each of the following reagents: 1M glycine 5) Why is deionized (ion-exchange) water not suitable as a solvent for use in UV absorbance measurements? 7) If you mix 1mL of the 1M glycine solution in problem 4a with 9ml of water, what is the final concentration of this diluted solution in mM? 9) You have just prepared a solution by weighing 20g of sucrose, transferring it to a 10liter...
One liter of pure gold weighs 42.5 lb . Part A If you discovered 1.1 f t 3 of pure gold, how much would it weigh in pounds? Express your answer to two significant figures.
a) If you are given a solution that is 350 ppm Zn, how would you make 250 mL of a solutions that is 120 ppm Zn? b) What is the concentration of the original solution of Zinc ions (350 ppm) in micrograms per mL of solution? The solubility of calcium carbonate in cold water (25 degree C) is 0.0014 g/100mL Calculate the concentration in Molarity of a saturated solution of calcium carbonate.