6. A laboratory disinfectant bleach solution is made of water and bleach. How could one prepare...
a laboratory solution is made of water and ethylene glycol. How could one prepare 150 ml of a 40% ethylene glycol solution?
how could you prepare 300mL of 0.45 M LiBr using a solution of 1.7 M LiBr and water? how could you prepare 10 L of 0.1 M NaOH using 1.0 M NaOH and water? what is the molarity of a solution made by dilluting 1.2 L of 7M KCl with 0.8 L of water?
A phlebotomy technician is asked to make a 10% solution of chlorine bleach to use for cleaning the counter tops. To make a total volume of one liter (L) of this 10% solution, which of these combinations is the best choice? a. 900 ml chlorine bleach and 100 ml water. b. 1 L chlorine bleach and 10 ml water c. 100 ml chlorine bleach and 900 ml water d. 10 ml chlorine and 1 L water
6% bleach solution How many mL of bleach solution would be necessary if 325mg of salicylamide were used. Use the calculation shown in the video. Answer:
Please help with questions 10-18 A. Bleach Analysis 0.1015 1. Molarity of Na,S,O, solution (from Expt. 29) Bleach 1 Bleach 2 2. 3. Brand Mass of vol. flask 10 mL bleach 91.8 9158g 1.909 u1.ng 4. Mass of vol. flask 5. Mass of 10 mL bleach 6. Density of bleach 7. Final buret reading 0 69540 2.bm s Inial buret reading 5.0m) 23m 12.4 9. Volume Na S20, solution 10. Moles of Na2S2O, . Moles NaCIO in 10 mL aliquot...
2. a) What is the concentration of chlorine in mg/L of household bleach that contains 6 percent by weight of Cl2. Note the density of water is approximately 1,000 kg/m and specific gravity of Cl2 = 1.41 at 20 °C. b) If you are to use this bleach solution to treat 1,000 L water for disinfection, what is the volume of the bleach solution should you use to obtain a target chlorine concentration 1 mg/L?
second pic is more info to find the formamide bleach solution (the calculations to prepare it) solution preparation (Freshly prepared by you. Do these calculations before lab.) • Formamide bleach solution: 1.2% H,0,5% formamide in 0.5x SSC. Make it fresh. 50% methanol 5. Incubate the worms in formamide bleach solution for 1 h at RT under direct light. 6. Rinse the worms twice with 1x PBSTW. 7. Incubate the worms with 2 ug/ml Proteinase k solution for 10 min at...
Outline of procedure: Dilute bleach solution A 1/10. Prepare analyte for titration by adding 10mL of diluted bleach solution, starch indicator and 5mL of 2 M HCl. Titrate the analyte with 0.05592 M Na2S2O3. Average volume of Na2S2O3 added for Solution A = 31.80 mL Average Volume of Na2S2O3 added for Solution B = 19.40 mL Question: Calculate the percent of sodium hypochlorite in the original bleach bottle using your averaged result. Show the calculation for solution A and only...
please I need help with this one question. Titration Procedure Prepare your starch solution by dissolving 0.040g of vitex starch in 20 mL of water. Prepare your 3%diluted commercial bleach solution (3% of the concentration of the commercial bleach, by volume.) Do not discard as you will use this solution for each of your trials. Dependingonyourinstructor’schosenmethod;deliverexactly3mLofcommercialbleach solution to a 100mL volumetric flask using the burette that contains the class’s supply of bleach, or pour some from the bottle into a...
Dakins’ solution is prepared using bleach and sterile water for irrigation. If the final concentration is 0.25% how much hypochlorite should you add to a 2000ml bottle?