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Problem- 1) the molar absorpitivity for the asprin-ion complex may be determined from the Beer's law plot. What is its value? Show calculations.
2) If the iron solution was incorrectly diluted to 0.002M for the unknown, what would be the effect on the calculated percent of aspirin in the tablet? Explain
Answer showing how to make each solution will get rated
Write equations for the ionization of the following acids. Which ones ionize only slightly?
How many milliliters of a 0.150 M magnesium hydroxide solution are needed to neutralize 1.282 L of hydrochloric acid solution that is 0.1048 M
Calculate the amount of solution (g or mL) that contains each of the following amounts of solute. Express the answer to two sig fiugres and include the appropriate units.
In the reaction of 12.0 g of 1-butanol MW=76 g/mol with 16.0g of NABR MW= 103 g/mol which excess acid produces 12.5 of the 1 bromobutane MW 137 g/mol?. Explain what is the % yield for the reaction
A colored complex of unknown sample solution exhibits 23% transmission through 1-cm long cuvette. A 1/1 dilution solution exhibits a transmission of 47.8%. The transmission from the blank solution is 96%. Calculate the molar absorptivity of the co..
Calculate the pH of a solution that has an ammonium chloride concentration of .05 M and a sodium acetate concentration of .045 M
What is the pH of the sodium phosphate buffer described in problem #1 if 1 ml of 10M NaOH is added? What is the pH of 1 liter of water if 1ml of NaOH is added?
V = 4.55 mL at 147 atm. What is the pressure if the volume changes to 10.0 mL?
determine how many moles of fe3o4 could be formed if 9.00 mol iron react with 12.00 mol oxygen?determine how many grams
when an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in the cylinder rose to 28.76 mL. What is the density of silicon in g/cm3?
Answer the questions below with the data provided: 15 mL of 5% NaOH (w/v) is used to deprotonate the unknown carboxylic acid. The TBME is washed with an additional 10 mL of the NaOH solution and then 20 mL of water which are all combined.
Aqueous ammonia is commercially available at a concentration of 16.0 M. How much of the concentrated solution would you use to prepare 300.0mL of a 1.40 M solution
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