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In conducting a titration of 75.00mL of a certain triprotic acid with 0.0800 M NaOH the following information was recorded. a. the first equivalence point was observed at pH 3.96 after the addition of 12.4 mL of NaOH b. the Second equivalence point was observed after the addiditon of 25.00 mL of NaOH; the pH was measured to be 4.98 Determine the apparent concentration of the triprotic acid and the dissociation constant for the first two dissociation steps given that pKa3= 5.19
What would be the speed of the following particles if they had the same wavelength as a photon of red light (? = 750.0 nm)
If the solubility of compound A in there at 0 degrees C is 2.0 g/100 mL and at 35 degrees C is 40.0 g/100 mL, how much ether would you use to recrystallize 20 g of A. What percent recovery would you expect.
The water is brought to the vapor state at 300 degrees celsius and 1,500 kPa, where its internal energy is 2,784.4 kJ/kg and its specific volume is 169.7 cm3/g. Calculate delta U and delta H for the process.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced.
Why do you think that being exposed to air can have an effect on the amount of vitamin C present in the sample of juice?
explain why cis-1-chloro-4-t-butylcyclohexane reacts rapidly with sodium ethoxide while the trans-isomer react slowly
How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0131 M?
FOr the balanced equation shown below, how many moles of Fe3O4 will react with 1.02 moles of CO, to form how many moles of FeO
A particular method is to be used to analyze an ore that contains 4.8% copper. What minimum sample weight should be taken if the relative error due to a 0.5 mg loss is to be smaller than .1%
A 25.264 g cube of aluminum is cooled to a temperature of -15.26*C. If it's placed in 250.00g of water at 35.00*C, what would the final temperature of the aluminum and water be when the system comes to equilibrium? Assume that no heat is lost.
Your metropolitan area has been warned by the EPA to lower sulfur dioxide and nitrogen oxide emissions or it will lose substantial federal funding. One citizen's group calls for conservation as a means of drastically reducing electricity consumption.
The number of nuclei decaying in a sample of Gallium-68 decreased by a factor of 4 over a period of 136.6 minutes. What is the half life of this isotope
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