For Experiment 2 you need to prepare a 10X dilution of a 100 mM NaCl stock solution (Mr 58.44). What is the concentration of the dilution in mg/mL?
For Experiment 2 you need to prepare a 10X dilution of a 100 mM NaCl stock...
You want to prepare 50 mL of a 20% NaCl salt solution from a 100% stock. Calculate the amount of stock as well as the amount of water you need to use to make this dilution. Assume that you have unlimited volume of the stock.
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...
Electrolytes, Concentration and Dilution of Solutions n this part of the experiment, you will make a dilution of a stock solution of known concentration and calculate the concentration of the dilute solution. DILUTION OF A STOCK SOLUTION PART C: Measurements and Observations Procedure Check out a 100-mL volumetric flask from your instructor. Fill test tube about 2/3 concentration of the active ingredient from its label including units. Record 1. orlt O " concentration of active ingredient. full of "Magic 2....
Data Table B: Dilution 5.5 M Assigned Molarity » Volume of 2.00 M NaCl added to flask (mL) 7 Mass of evaporating dish (9) Procedure Part B 8 Volume of solution (L) Mass of evaporating dish and diluted solution (9) Mass of diluted solution (g) 10 Volume of diluted solution (L) 11 • Reset the experiment. Using the concentration of the stock found with the purple tool from before and the desired final volume of 1.00 L and final concentration...
Serial Dilution Questions 1, Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2,00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of...
You are given a stock solution of ribosylated collagen. In order to complete your experiment, you will need four 1ml aliquots of ribosylated collagen in phosphate buffered saline (1M), each containing 67.5 ng/ml. The stock concentration is 10 ug/ml, What steps are required to achieve the required concentrations? During lab a classmate accidentally breaks an Erlenmeyer flask: a single shard causes a 50mm laceration between his elbow and wrist. You decide that the best way to keep the wound clean...
1. Ifyou wanted to make a 4 M NaCl solution and you wanted a full Liter of it, how would you make it? Describe all of the steps. (Remember from lab, molecular weight of NaCl is 58.44) 2. Now describe how you would dilute this 4 MNaCl solution by a 1:10 dilution -how would you do this? Again, make 1 Liter. 3. Suppose you wanted a 2: 50 dilution of a stock solution, but you wanted 200 mL of it....
please hlep me answer those three questions asap. Please ignore question 7. Question 7 Working with buffers You need 100 ml of 120 mM phosphate buffer and you have two stock solutions from which you can make the buffer; 0.6 M NaH2PO4 (the acid form) and 0.6 M Na2HP04 (the base form). You need to add 3 times more of the base form than the acid form to achieve the desired pH. How will you make this solution? Question 8...
Question 2 1 pts You need to make a 500 mL buffer containing 35 mM NaCl and 50 mM Tris buffer. You already have a 5 M NaCl stock solution and a 1 M Tris stock solution. How much NaCl stock do you need (mL)?
Lab 5: Additional Dilution Problems You have a stock solution that contains 24 mg/ml of protein. You want to make a set of standards with the following concentrations: 12 mg/ml, 6 mg/ml, 3 mg/ml and 1.5 mg/ml You need a minimum of 500 ul of each standard after all dilutions are completed. Using the technique of serial dilution, explain how you would make your standards by filling in the chart below. Std 4 Std 1 12 Std 2 6 Std...