If a solution of 10 mg/ml methyl orange is diluted 100 times, 1 ml added to 99 ml of water for example, what is the final concentration?
A. 1 mg/ml
B. 0.1 mg/ml
C. 0.001 mg/ml
If a solution of 10 mg/ml methyl orange is diluted 100 times, 1 ml added to...
The standard concentration of the antibiotic Vancomycin is 6.20 mg/dl. It is diluted 1:10. Then 1.0 ml of the first dilution is added to 4.0 ml of diluent? What is the final concentration of the antibiotic in this solution?
3. 0.5 mL of diluent is added to 0.5 mL of a 100 mg/dL glucose solution. What is the dilution? What is the final concentration?
How many μl of a 150 mg/ml solution of ampicillin should be added to 10 ml of nutrient broth so that the final concentration of the antibiotic will be 100 μg/ml?
A bacterial culture is diluted 4 times by repeating the same procedure four times (10 ml of the culture in 1.99 mL of water). If the initial concentration is 56 x 10 cells / mL what will be the final concentration after the 4 dilutions?
ncetoi paper) 1. BSA stock solution A has a concentration of 3.50 mg/mL. 1.00 mL of stock solution A is diluted to a final volume of 5.00 mL to prepare solution B. 1.00 mL of solution B is diluted to a final volume of 5.00 mL to prepare solution C. 1.00 mL of solution C is diluted to a final volume of 10.00 mL to prepare solution D. Calculate the concentrations of solutions E, C, and D. Show your work....
If 100. mL of 0.040 M NaOH solution is added to 100. mL of solution which is 0.10 M in and 0.10 M in, what be will the pH of the new solution? a. 5.00 b. 4.74 c. 4.81 d. 4.89 e. 5.11 What concentration of Al^3+ must be added to a solution of pH = 4.80 in order to initiate precipitation of Al(OH)_3 at 25 degree C? K_ for Al(OH)_3 = 1.9 times 10^- a. 5.3 times 10^-7 M...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
Five milliliters of 5% alcohol are added to 5 mL of urine. Two milliliters of this solution is diluted to 50 mL with water, and 5 mL of this are used for analysis. How many milliliters of urine are in the analysis sample? You are doing a procedure that calls for 5 mL of undiluted urine. You use 3 mL of a 1/5 dilution of urine instead. The answer obtained is 50 mg/dL. What result should be reported? A procedure...
8. A 50-g/L solution was diluted 1:5. This diluted sam ple was then diluted 1:10. What is the concentration of the final solution? a. 0.8 g/L b. 1 g/L c. 2.9 g/L d. 3.3 g/L 9. How much diluent is needed to prepare 300 mL of a 0.2-M working solution from a 0.8-M stock solution? a. 75 mL b. 225 ml c. 900 mL d. 1200 mL 10. What is the molarity of a solution containing 2 mol of sodium...
33) If 100. mL of water is added to 25 mL of 5.0 M NaCl solution, what is the final concentration? 34) Calculate the volume of 0.123 M AgNO3(aq) needed to form 0.657 g of Ag2SO4(s) according to the chemical equation: 2AgNO3(aq) + H2SO4(aq) -----> Ag2SO4(s) + 2H20(1). 35) Calculate the concentration of a KCl solution prepared by adding 200. mL of water to 100 mL of 12% KCl solution.