A phlebotomy technician is asked to make a 10% solution of chlorine bleach to use for...
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
Homework Answers
To prepare 1 litre of 10% chlorine bleach solution for cleaning purpose, mix 100ml of chlorine bleach with 900 ml of water. The ratio is 1:10.
The option c is correct answer.
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A phlebotomy technician is asked to make a 10% solution of
chlorine bleach to use for...
2. a) What is the concentration of chlorine in mg/L of household bleach that contains 6...
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?
Outline of procedure: Dilute bleach solution A 1/10. Prepare analyte for titration by adding 10mL of...
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...
A. Bleach Analysis 0.1015 1. Molarity of Na,S,O, solution (from Expt. 29) Bleach 1 Bleach 2 2. 3....
Please help with questions
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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...
5. What is the % w/v of a solution that has 250 mg of penicillin V...
5. What is the % w/v of a solution that has 250 mg of penicillin V dissolved in a total volume of 100 ml of distilled water ? 6. Using the formula CV=C1V1 given a total volume of 300ml of a 10% w/v of a bleach solution how many ml of this stock solution is need to make a 1.0% solution ? 7. A total of 125 ml of a 10% solution is diluted to...
You are given a 2M stock solution of NaCl and are asked to make up 100...
You are given a 2M stock solution of NaCl and are asked to make up 100 ml of a 1M solution of NaCl. How do you do that, using the stock solution and distilled water? Select one: O a. I would add 2 ml of the stock to 98 ml of water. O b. I would add 10 ml of the stock to 40 ml of water O c. I would add 20 ml of the stock to 80 ml...
In the simulation below, you will be working with a 10.00 mL solution, which you will...
In the simulation below, you will be working with a 10.00 mL
solution, which you will make up of the dye and the bleach. You
will be using a 10 mL serological pipet to deliver the dye and a 1
mL syringe to deliver the bleach to a vial, which you will place
into the spectrophotometer. You will have to ensure that the
solution is mixed well throughout the experiment by means of a
magnetic stirrer. You are given a...
second pic is more info to find the formamide bleach solution (the calculations to prepare it)...
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...
PLEASE ANSWER ALL 10. What volume of 14N H2SO4 is needed to make 500 mL of...
PLEASE ANSWER ALL
10. What volume of 14N H2SO4 is needed to make 500 mL of 3.2M H2SO4 solution? 11. A solution contains 40 g of solute dissolved in 0.5 L of water. What is the percentage of this solution? 12. How many mL of 4M H2SO4 are required to make 1.5L of 0.5M acid? 13. 100mL of 8% NaCl solution contains g of NaCl 14. A liter of 0.95% solution of NaCl contains g of NaCl 15. 2500mL of...
please I need help with this one question. Titration Procedure Prepare your starch solution by dissolving...
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...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1,...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
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?
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...
You are given a 2M stock solution of NaCl and are asked to make up 100 ml of a 1M solution of NaCl. How do you do that, using the stock solution and distilled water? Select one: O a. I would add 2 ml of the stock to 98 ml of water. O b. I would add 10 ml of the stock to 40 ml of water O c. I would add 20 ml of the stock to 80 ml...
In the simulation below, you will be working with a 10.00 mL
solution, which you will make up of the dye and the bleach. You
will be using a 10 mL serological pipet to deliver the dye and a 1
mL syringe to deliver the bleach to a vial, which you will place
into the spectrophotometer. You will have to ensure that the
solution is mixed well throughout the experiment by means of a
magnetic stirrer. You are given a...
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...
PLEASE ANSWER ALL
10. What volume of 14N H2SO4 is needed to make 500 mL of 3.2M H2SO4 solution? 11. A solution contains 40 g of solute dissolved in 0.5 L of water. What is the percentage of this solution? 12. How many mL of 4M H2SO4 are required to make 1.5L of 0.5M acid? 13. 100mL of 8% NaCl solution contains g of NaCl 14. A liter of 0.95% solution of NaCl contains g of NaCl 15. 2500mL of...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
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