
If you have 1M/L stock solution, how would you make 20mL of 20mM from the solution?
If you have a 20mM solution of NaH2PO4 and you want to make a solution of pH=6.42, what should be the concentration of Na2HPO4 ? The pka of these two forms is 6.82. - Bonus Q: How many grams of Al(SO4)3 18H20 (MW 666.42 g/mol) would you add to 200 ml water to make a 20mm stock solution? sm wolnaza arlok
3. How would you make 200 ml of a 250 mM phosphate buffer from a 1M stock solution of phosphate buffer? r. nus: how would you make 100 ul of 10 mM glucose solution from a 1M glucose stock solution? int: might need to do a serial dilution, as our pipettes cannot dispense less than 2ul)
1. You have been asked to make a 1:5 dilution of 20mL of patient sample. The final volume should be 100mL. Which of the following outlines the correct way to make this dilution? For the other answer options, explain why they are incorrect. A. 10mL of patient sample added to 40mL of saline B. 10mL of patient sample added to 50mL of saline C. 20mL of patient sample added to 100mL of saline D. 20mL of patient sample added to...
In an experiment, you need to create 275 mL of a 1M solution. You have 2L of a 5M stock solution. Calculate how much stock solution you would need to mix with water to make a 1M solution.You would take mL of the 5M stock solution in a flask and add mL of distilled water.Answers should be numerical (eg, 1, not one)
We have a stock solution of W at 1M, and another stock solution of V at 100 mM. you want to make 1L of working solution containing 20 mM of W and 2 mM of V in water. How much ( volume) W, V and water to do you need?
You have a 1M stock solution of glucose and you want to prepare three separate dilutions: 100mM, 10mM, and 0.1mM glucose. How would you do this?
Starting from a stock solution of 1g/L lead, how would you accurately make two 1.0 ml aqueous standards that are 1ppm (parts per million) and 1ppb (parts per billion)? You can accurately measure 10µl volumes, but not small volumes.
How would you make 1L of 0.1N NaOH solution from an 18N stock solution?
biochemistry
Question 3.(9 pts) You need to make up a 600 ml of a 40 mM solution of Citric acid DH 7.5 from a 1M stock of Citric acid pH 6.4. Citric acid pKa 6.4. Describe how you would make up this solution. Show work and all calculations
Question 3.(9 pts) You need to make up a 600 ml of a 40 mM solution of Citric acid DH 7.5 from a 1M stock of Citric acid pH 6.4. Citric acid...
If you have a 1M stock solution and you want to dilute 1 :10 with water, how many mL of your stock are needed and how many mL of water, if you are making 100mL, 250mL and 500mL