If you have 20 mL of 0.25M Na2SO4, how much 200 mM solution can you make?
If you have 20 mL of 0.25M Na2SO4, how much 200 mM solution can you make?
Consider that you have 200.mL of 0.0500 M Na2SO4 solution in water. The density of the solution is 1.05 g/mL. a) What os the mass % of sodium sulfate in the solution? b) What is the ppm of the sodium sulfate in the solution? c) What is the molarity of ions in the solution assuming 100% dissociation? d) What is the molality of sodium sulfae in the solution? e) What is the molality of ions in the solution assuming 100%...
Can you make up 20 ml of a 1:200 dilution from 2 ml of a 1:40 stock solution? (a) If so, how? If not why not? (b) If not what is the largest volume of a 1:200 you could make?
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)
4) You have a 50 mM stock solution of sodium dodecylsulfate and you need to make 50 mL of a 0.1 mM solution. How much sodium dodecylsulfate will you need from the stock solution? 5) For Question #4, how much water will you need to add?
2NaOH(aq) + H2SO4(aq) --> Na2SO4(aq) + H2O(l) 15.6 mL of 0.25M H2SO4 is required to completely reract with 12.3 mL of a NaOH solution. What is the concentration of the NaOH solution? A. 3.9 M B. 0.0078 M C. 0.63 M D. 0.0039 M
How do you make the following 300 mL solution: 10 mM Tris 25 mM NaCl 20% Sucrose 3 ug/mL BSA .72 M KCL Use these as your givens: 2 M Tris Solid NaCl (MW = 58.44 g/mol) Solid Sucrose (MW = 342.3 g/mol) 3 mg/mL BSA Solid KCL (MW = 74.5513 g/mol) Thanks!
You need a 20% acid solution. You have 980 mL of 15% on hand. How much of a 90% acid solution should you add to obtain the desired solution? mL of 90%
How much guanidine hydrochloride (g) is needed to make 200 mL of 5M guanidine hydrochloride solution?
How would you make 300 mL of a 5.5 mM glucose solution?
Chapter 11: Solutions, Prs stice Questions: How much ofa 20% solution would you need to make 30 mL of a 5% solution?