A 25 mL sample is pipetted from a AB, stock solution. Which answer correctly describes the relationship of the moles of AB3 and the concentration of the solution of this sample vs the stock solution in the initial flask? a. There are fewer moles of AB3 in the pipetted sample. The concentration of the pipetted sample is lower than the original flask. b. There are more moles of AB3 in the pipetted sample. The concentration of the pipetted sample is the same as the original flask. c. There are fewer moles of AB3 in the pipetted sample. The concentration of the pipetted sample is the same as the original flask. d. There are the same moles of AB3 in the pipetted sample. The concentration of the pipetted sample is the same as the original flask. e. There are more moles of AB3 in the pipetted sample. The concentration of the pipetted sample is higher than the original flask.

1. Determine the concentration as a percentage by volume if a 600. mL bottle of vinegar contains 30.0 mL of acetic acid.

6. * LA stock solution of nitric acid is found in the back of the chem stock room, but the concentration on the label is illegible. Andy decides to determine its concentration with a titration, so it can be relabeled. a. She prepares a stock solution of NaOH by adding 150.g to 2.50 L of water. What is the concentration of the NaOH stock solution? b. She adds an indicator to a 200. mL sample of the nitric acid solution and find that it takes 670. mL of the NaOH solution to reach the equivalence point. How many moles of NaOH were added? ketch tool What is the concentration of the stock solution of nitric acid? С.

It required 66.66 mL of 2.000 M HBrO3 to titrate (neutralize) 50.00 mL of an Al(OH)3 solution. What is the molarity, M, of the aluminum hydroxide solution ? 3 HBrO3 + Al(OH)3 3 H20 + Al(BrO3)3 А. О.8888 М B. 0.2666 M C. 0.08888 M D. 0.02666 M