I need to make a solution that is 0.5M of compound B (MW=225) and I need to use 2.5 mL of methanol. How much compound B I need to use? Please show your work.
I need to make a solution that is 0.5M of compound B (MW=225) and I need...
QUESTION 5 How many grams of Tricine (MW = 179) would you need to make 300 mL of a 20 mM solution? QUESTION 6 How many grams of Tricine (MW = 179) would you need to make 50 mL of a 10 UM solution? QUESTION 7 How many grams of magnesium chloride (x6H2O) are contained in 250 mL of a 0.1 M solution? QUESTION 8 How many grams of sucrose (MW 342) are contained in 250 mL of a 0.1...
PLEASE SHOW WORK! Answers are included. What is the molarity of a 20% by weight solution of NaOH? MW=39.99 A: 5M What percentage (%) is 1.5M NaOH? A: 6% How would you prepare 250 mL of a 0.5M NaCl solution? MW=58.44 A: 7.31g NaCl and H2O until reach 250 mL If you add 10g of NaCl to 500 mL, what is the concentration, in percent, of the solution? A: 2% NaCl solution If you add 10g of NaCl to make...
10. From a 3.01 mg/mL stock solution of ONPG (MW 301.25), prepare 1000 ML of a 1.0 mM ONPG solution. How much stock and how much water are needed to make this solution? Show your work. Be sure to include proper units!
How do I make a 50 ml, 2M solution of sorbitol MW=182.17?
If I need to make up 1L of a 0.5M soln of CaCl2, how many grams would I need?
From a 95% ethanol (ETOH) stock solution, you need to make 250 mL of 70% ETOH. How much stock and how much RO water do you need to make this solution- Show your work.
completely with units and show your work for full credit. Complete on this sheet or on a separate piece of paper, but do not complete in your lab notehook For each question, clearly indicate the name and the amount of EACH solute AND the amount of solvent (using proper units gms or mls, unless otherwise indicated) that you would use to prepare the solution. Assume water is the solvent if not indicated. 2 pts will be earned for showing your...
Lab Homework Convert 875 ul to ml and to I. Each answer should use scientific notation. Show your work. Calculate how you will make the following solutions. You will need to show how much of Y solution you will need and how much water you will need. Show your work: You need to make 125 ml of a 0.3 M sodium acetate (NaAc) solution. Your stock solution is 3 M NaAc. You need to make 750 mL of a 1X...
10 mL of 1M NaOH solution is titrated with 0.5M HCl to a pH of 2. What volume of HCl was added? (in unit of mL) Please show all work and explain!
1. How much of a Na2Co3 stock solution do you need to make 150 ml of a 5 % Na2Co3 working solution ( mw=105.99g/mole) 2. You purchased a t7 DNA ligase , a 10x buffer [50mM tris ph 7.5, 100mM Na2co3, 70mM ATP, 250ug/ml bovine serum Albunium ] is supplied with it. what is the final Molarity of Tris and Bovine Serum Albumin when you use the ligase enzyme to perform a ligand reaction? I know the answer to it...