How would you prepare 2 L of a CaCl2 solution with a concentration of 5mg/ml?
How would you prepare 2 L of a CaCl2 solution with a concentration of 5mg/ml?
Question 1You are asked to prepare 50 mL of a 2 g/L solution of CaCl2 you have a stock solution of 140 g/L. How many mL of the stock doyou need to dilute to 50 mL to get this concentration?Question 2 If you mix 7 mL of a 340 g/L stock solution of KCl in a total volume of l000mL. what is the KCl concentration in your solution?Answer in g/L.
You have an enzyme solution at a concentration of 5mg/ml. The enzyme activity you determine is 0.1 Units per microliters of undiluted protein. What is the specific activity of the enzyme (U/mg)?
1. How would you prepare 125 ml of a 10% (v/v) solution of acetic acid in H2O? 2. How would you prepare 60 ml of a 5% (W/V) NaCl solution in H20? 3. How would you prepare 3 ml of 82% solution A and 18% solution B? 4. 5 ml of a 2.0 mg/ml protein solution contains mg protein. a. If 1.0 ug/ml of pigment X shows an absorbance of 0.059 at 370nm, then what is the concentration of a...
When 5.5 g of CaCl2 is dissolved in 1 L of solution, the concentration of CaCl2 is 0.05 molar (0.05 M CaCl2). The solution is also described as being 0.05 M Ca2+(aq) and 0.10 M Cl−(aq). The same solution could be referenced as [Ca2+] = 0.05 M. The circle represents a unit volume. It can be interpreted as “1 L”. Exploring the Model 12. What do the brackets [ ] mean? 13. Explain why the concentration of chloride is twice...
How would you prepare 2 L of 1 MMgCl2 from a 4 MMgCl2 stock solution? Add 500 mL of the 4 M MgCl2 stock solution to enough distilled water for a total volume of 2 L of solution. Add 2000 mL of the 4 M MgCl2 stock solution to enough distilled water for a total volume of 2 L of solution. Add 250 mL of the 4 M MgCl2 stock solution to enough distilled water for a total volume of...
Suppose that you have a solution that is 1.0 g/L Ca(OH)2 and you want to prepare 24.0 mL of 0.333 g/L Ca(OH)2 solution. Fill in the following blanks for how you would prepare the solution. To prepare 24.0 mL of 0.333 g/L Cal(OH)2 solution, you would add Ca(OH)2 solution and Enter each number to two significant figures. mL of 1.0 g/L mL of water.
How many chloride ions are present in 250.0 mL of 0.173 M CaCl2 solution? How many mL of 1.55 M NaOH solution do you need to prepare 125.0 mL of 0.0500 M NaOH solution?
Hydrates: 1a. Calcium chloride (CaCl2) is available; the procedure calls for an 8% CaCl2•10 H20 solution. What would be the procedure for making 2,000 mL of the desired concentration? 1b. How many grams of CuSO4•5 H20 are needed to make 1 L of a 1% solution of CuSO4? 1c. How many grams of Co(NO3)2•6 H2O are needed in preparing 400 mL of a 0.02% solution of Co(NO3)2? 1d. A 9% CuSO4 (anhydrous) solution is made up by dissolving 9 g...
6. Explain how you prepare the following dilute solution from more concentration.(Dilution) 5.00L of 6.00 M H2SO4 from a 18.0 M H2SO4 solution 7. 250 mL of 0.500 M CaCl2 from a 3.00 M CaCl2 solution.(Dilution) 8. Boiling point and Freezing point Elevation Calculate the boiling point and freezing points of water solutions that are 1.50 Min the KCl, a strong electrolyte. (the kb for water is 0.520, kf = 1.86)
Cloud Explain in detail how you would prepare a 2.00 L solution of 0.0638 M of ferrous hydroxide What is the pH of this solution? What will be the pH of this solution if you add 500.0 mL of water?