Q: prepare 250ml of 0.10 m NaOH from solid NaOH and water
A: Molarity: The moles of a solute per litre of a solution is called as molarity (M).
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A: HClO2 is Chlorous acid which is a weak acid. Weak acid dissociate weakly in aqueous solutions.…
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Q: .A stock solution has a concentration of 10M. 50 mL of this stock solution is used to make 1L of a…
A: NOTE:- Since you have posted multiple questions so we will be solving the first one for you. As per…
Q: stion 11 Calculate the amount (grams) of solid KOH to prepare 50 ml of 5 mM KOH solution (Molar…
A: Molarity It is defined as the number of moles of a substance dissolved in 1 liter of a solution.…
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A: Hi! Thanks for your question. But as you have posted multiple questions, I am answering only the…
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A: A buffer is defined as an aqueous chemical solution that resists a change in its pH or acidity. It…
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Q: 10x
A: A. 10xA difference in 1 unit in pH is equivalent to 10x H+ ion concentration.
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Q: 2. Calculate the pH of a buffer containing 0.1 M sodium acetate and 0.2 M acetic acid (pKa = 4.76).
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- 3) With our 12.5 ug/mL solution, we will make serial dilutions with a dilution factor of 2. We want to make 1 mL of 1/2, 1/4, 1/8, 1/16, 1/32, and 1/64 dilutions. Draw a diagram describing how you will conduct the serial dilutions and insert it below. The 1/2 dilution (tube 2) will be made from the 12.5 ug/mL solution (tube 1). The 1/4 dilution (tube 3) will be made from the 1/2 dilution (tube 2LWhich of the following indicates buffering in the titration given in the image below? 12 11 10 Point 1 Point 2 8 7 pH Region 1 Region 2 6 4 3 Cocoo 2 + + + + + 10 15 20 25 30 35 40 45 50 ml of 0.1MHCI1. Why is necessary to remove fat and tendons from the heart sample? 2. Why is necessary to completely grind the beef? 3. Why is necessary to balance the homogenate tubes for centrifugation? 4. How do you prepare a 100mL of 0.1 M phosphate buffer? 5. From the anterior buffer, how do you make 100mL of 0.05 M? 6. Calculate the amount of ammonium sulfate necessary to get a 20% solution? 7. Which is the importance of dialysis?
- o NB4: Why do you think you first had to make the 1 mM solution instead of working directly from the stock solution?1. How do you prepare 25 mL of a 0.4X solution of SDS from a 20X stock?2. How do you prepare 50 mL of a 0.25X solution of Trisethylenediaminetetraacetic acid (TE) buffer from a 100X stock?Describe how will you dilute a 10X stock solution into 5X, 2X, and 1X, respectively.
- 1) You have been asked to make up four 1.5% agarose gels at 30 ml each. Ethidium Bromide is to be added at 0.5 ug/ml and you have a bottle at 10ug/ml. Write down step-by-step protocol of how to proceed. 2. How would you make up one liter of 1X TAE buffer using a 25X stock?2. Calculate the following: a. you are asked to prepare 10 NA slants and 5 NA stab in big tubes. How much NA should you prepare if the indicated preparation for NA is as follows: 1. Suspend 28g of nutrient agar powder (CM0003B) in 1L of distilled water. 2. Mix and dissolve them completely. 3. Sterilize by autoclaving at 121°C for 15 minutes.Your pharmacy has on hand Tetracycline 250 mg/5 mL liquid.You receive a prescription for Tetracycline syrup 500 mg qid for 7 days. How many total milliliters would you dispense? Your pharmacy has on hand Prednisone 5 mg tablets.You receive a prescription for Prednisone 5 mg ii tabs stat and qid x 1 day, then ii tabs tid x 2 days, then ii tabs bid x 2 days, then i tab tid x 3 days, then i tab bid x 3days, then i tab qd x 4 days How many tablets would you dispense for this prescription? How many days will the patient take this medication for? Your pharmacy has on hand Dilantin 100mg capsules.You receive a prescription for Dilantin 100 mg 1 cap po in the AM & PM, 200mg (2 caps) po at noon, and 300mg (3 caps) po at hs. Dispense a 30 day supply. (using the 100mg capsules you have in stock) How many capsules will you dispense? Your pharmacy has on hand Dakins Irrigation Solution 1 liter.You receive a prescription for Dakins Irrigation Solution Irrigate chest tube with 100 mL…
- Calculate the amount of phycocyanin in Sample 1 in mg where A620=0.204 and A650=0.061, taking into account the dilution factor as per question 6, and the total volume of extract as per question 4. Note your answer to 2 decimal places Sample 1 Total Extract Volume (ml) is 45 Dilution factor is 100 A280 is 1.07 A620 is 0.221 A650 is 00.97 Specific Absorbance Ratio (SAR) A620/A280 is 0.206Choose the one answer that fits best. Which of the following statements regarding the proper procedure for using Micropipettes is NOT correct? O a. You cannot use a 2-20 µl micropipette to pipet 200 µl O b. To expel all the liquid from the tip, you have to press the eject button O c. To draw up solution, press and hold the plunger at the first stop before entering the solution O d. Micropipettes always require the use of a disposable plastic tip O e. While pipetting, micropipettes should always be held as straight as possible1mL Stock #1 1mL 2000060 9mL #2 9mL wwwww #3 4. 1mL 0000000 A 9mL wooooo #4 0.1m/L O 1mL 5000000 B 9mL #5 1mL 1mL 9mL wwwwww #6 0.1mL 1mk O. D Using the picture serial dilution scheme and the following information (plate A has 276 colonies, plate B has 298, plate C has 2, and plate D has 30), calculate the average number of colony forming units per mL in the stock tube. Make sure to only use countable plates. Round your answer to the nearest one. Write only the number with any needed commas or decimals. Do not include units.