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A typical buffer utilized by biochemists is called Tris, which can be depicting as R3N. A buffer that is makes by mixing 500mL of 0.050 M R3N with 500mL of 0.050 M R3NHCl at 25 degrees Celsius has a pH of 8.40. If this similar buffer is placed in a cold room at 4 degrees Celsius, the pH increases to 9.20. From this data find out the ΔHrxn for R3NH+(aq) <--> R3N(aq) + H+(aq) R= 8.31447215 J/K mol
A 10-L drum of ether at 18C is open to the atmosphere (p=760 Torr) and contains 6-L of liquid. The top is sealed and the drum dented so that it now has an 8-L capacity.If the vapor pressure of the ether at 18C is 400 Torr, What is the pressure ins..
Draw the structures and then List the following alkyl halides in order of their increasing reactivity as substrates in SN2 reactions
Which of the following atoms has the smallest radius? At, Br, Ge, or Pb? Which of the following atoms has the smallest radius? At, Br, Ge, or Pb? The answer is Ge. Based on trends, wouldn't Br have a smaller atomic radius than Ge?
When doing the Recrystallization of benzoic acid. Is it better to use just water as the solvent or with methanol and water as a solvent pair. Why and what are the differences
Net equations and mechanisms for Tollen's test and Iodoform test with 3,3-dimethyl-2-butanone.Also net equation and mechanism of the synthesis of 2,4-Dinitrophenylhydrazine(derivative) with 3,3-dimethyl-2-butanone.
To the alchemists, gold was the material representation of purity. It is a very soft metal that can be hammered into extremely thin sheets. If a 1.07 g piece of gold is hammered into a sheet whose area is 30.0 ft2,
Calculate the volume (in liters) occupied by 1.51 moles of nitric oxide (NO) at 7.50 atm and 57 degrees C 16. What is the volume (in liters) occupied by 43.7 g of HCl at STP
What mass of Al in grams is deposited at an electrode is a current of 1.22 amperes is passed for 12.0 hours through a solution of Al(NO3)3
In a voltaic cell, the anode is negative relative to the cathode. Oxidation occurs at the anode of either type of cell (voltaic and electrolytic).
Calculate the work w when 5.3 litre of an ideal gas at an initial pressure of 9.3 atm is expanded or compressed isothermally to a final volume of 9.3 litres reversibly
What volume of a 0.215 M sodium hydroxide solution is needed to exactly neutralize 1.06 grams of KHP
How many moles of HIO3 are produced when 1.29 grams of ICl3 and 7.81 grams of H2O react
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