How would you make 100 mL of an 80 mmol/L Cl- standard? The stock shelf has NaCl crystal (MW of Cl- is 35 and MW of Na is 23)

How would you make 100 mL of an 80 mmol/L Cl- standard? The stock shelf has...
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...
Making Solutions Practice Problems: I. How would you prepare 100 ml of a 30% (w/v) solution of polyethylene glycol (PEG)? 2. How would you prepare 50 ml of a 9 % (w /v ) solution of NaCI? 3. How would you prepare 200 ml of 70 % ( v /v ) solution of ethanol from a stock of 95% ethanol? How would you prepare 200 ml of 0.3 M NaCl? (NaCl MW 58.44) 4. 5. How are 50 ml of...
You are directed to prepare 100 mL of a 500 mEq/L KOH standard. The primary standard used has a concentration of 0.400 Eq/L. When titrating your KOH solution, you discover that 4.0 mL of the primary standard reacted exactly with 5.0 mL of the KOH solution. a. What is the actual Eq/L concentration of the KOH solution? b. How many mEq are required to adjust the volume and concentration of the remaining 85 mL of KOH solution to 100 mL...
a) Calculate how you would make 1.0 L of 10x TBE (0.9 M Tris, 0.9 M Boric Acid, 20 mM EDTA) Tris MW=121.4 g/mole; Boric Acid MW=61.84 g/mole; EDTA MW=292.2 g/mole b) For your polyacrylamide gel electrophoresis gel you need 50 mL of 0.5x TBE. Calculate and describe how you would make this solution using your stock solution.
Can someone walk through a few simple algebraic solution-making problems? I know how to use formulas, such as C1V1 = C2V2, however I'm having issues with the conceptual part, mostly for when using two solutes. Problem #1: Make 200 mL of a saline that has 5 mMol NaCl and 15 mMol KCl. Stocks are 0.1 M NaCl & 0.2 M KCl. (and if it's simply the C1V1=C2V2 of one, and then the second, added together in a 200 mL flask...
I need help on solving these equations I keep getting
stuck
13, How would you make 1 L of a 2% NaCl solution? 14, How would you make 100 ml of a 5% NaCl solution? 15, How would you make 2L of a 10% glucose solution? 16, How would you make 400 ml of a 3% glucose solution? 17. What is the percent solution if you put 3000 mg of CaClh in 100 ml of H20? 18. If you put...
To make a 125 ml solution of 80 mg/ml ampicillin how many grams of ampicillin (sodium salt, MW = 371.40 g/mol) would you need? Show all your calculations.
Please calculate how many mL of sodium acetate 16.4 % you would add to a 790mL bag of 0.8 % saline to make the solution isotonic (assume isotonic is 310 mOsmol/L). (sodium acetate MW 82, NaC1 MW 58.5) Answer: Please calculate how many mL of dextrose 25% you would add to a 224mL bag of 0.59 % saline to make the solution isotonic (assume isotonic is 310 mOsmol/L). (dextrose MW 180, NaCI MW 58.5) Answer:
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.
You start with a 4M stock solution of NaCl, you need to make dilutions to obtain various working solutions. Describe how you would make 100 mL of a working solution that has a final concentration of 1M. Be sure to include the volume and concentration of the components.