A 15.00mL solution of unknown concentration is diluted to 250.00mL. A 10.00mL aliquot of the 250.00mL solution is analyzed with the spectrometer and the concentration of the solution is found to be 3.50x10^-2 mg/mL. What is the concentration of the original sample?
A 15.00mL solution of unknown concentration is diluted to 250.00mL. A 10.00mL aliquot of the 250.00mL...
A 13.0 mL aliquot of a flouride sample solution was diluted to 250 mL in a volumetric flask. The F- concentration of this DILUTED sample was determined with a F- ion selective electrode and found to be 3.1 mg/L. What is the concentration of F- in the original, undiluted sample?
15.00mL of an unknown concentration of Ca[OH)2 is titrated with 2.00M HCI. It takes 10.00mL of HCl to reach the equivalence point. What is the concentration of Ca27 Remember: MaVa-MbVD 0.67M 1.78M oc 2600 D. 1.33M
An unknown solution containing iron at a concentration between 10 and 50 mg/L is now to be analyzed. 25 mL of this unknown solution is diluted to 250 mL with the appropriate reagents to form the ferrous - phenanthroline complex. The diluted solution has an absorption of 0.795. What is the concentration in (mg/L) of ferrous ion in the diluted solution? Enter a numeric answer only, do not include units with your answer. part 2 ) What is the concentration...
A 65.0 mL aliquot of a 1.60 M solution is diluted to a total volume of 268 mL. A 134 mL portion of that solution is diluted by adding 179 ml of water. What is the final concentration? Assume the volumes are additive. concentration: A 3.94 g sample of a laboratory solution contains 1.26 g of acid. What is the concentration of the solution as a mass percentage? concentration: % acid How many grams of a 19.3% sugar solution contain...
Question 30 of 38 > A 62.0 mL aliquot of a 1.20 M solution is diluted to a total volume of 238 ml. A 119 ml. portion of that solution is diluted by adding 187 mL of water. What is the final concentration? Assume the volumes are additive. concentration:
A 73.0 ml. aliquot of a 1.30 M solution is diluted to a total volume of 258 ml. A 129 ml. portion of that solution is diluted by kling 135 ml, of water. What is the final concentration? Assume the volumes are additive concentration:
A 75.0 mL aliquot of a 1.50 M solution is diluted to a total volume of 208 mL. A 104 mL portion of that solution is diluted by adding 185 mL of water. What is the final concentration? Assume the volumes are additive. concentration: M
A 69.0 mL aliquot of a 1.40 M solution is diluted to a total volume of 228 mL. A 114 ml. portion of that solution is diluted by adding 131 ml of water. What is the final concentration? Assume the volumes are additive. concentration: 0.157
A 73.0 mL aliquot of a 1.40 M solution is diluted to a total volume of 218 mL. A 109 mL portion of that solution is diluted by adding 189 mL of water. What is the final concentration? Assume the volumes are additive.
A 53.0 mL aliquot of a 1.60 M solution is diluted to a total volume of 208 mL. A 104 mL portion of that solution is diluted by adding 111 mL of water. What is the final concentration? Assume the volumes are additive.