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Question - For the amino acid glycine, the carboxyl group (COOH) has a pKa = 2.0 and the amino group (NH3+) has a pKa = 9.0. Which is the dominant form of glycine at physiological pH = 7.4?
I have no thought how to do this thank you for your help
The pH of the solution at the equivalence point. e) The pH of the solution after 40.0 mL of HCl are added.
Presume the heat is achieved completely by the air at a constant density of 1.239mg ml-1, absorbing heat. The outside temperature is -15C. Explain how much heat is extracted from the outside and how much work must be performed
The activation energy of a certain reaction is 47.9 kJ/mol. At 27 Celsius, the rate constant is 0.0120 s^-1. At what temperature in degrees Celsius would this reaction go twice as fast
Write a balanced chemical equation for the reaction between MnO4- and I - in basic solution. The skeleton ionic reaction is given below. MnO4-(aq) + I -(aq) MnO42-(aq) + IO3-(aq)
identify the species formed in the first step in the acid-catalyzed dehydration of 1-Methylcyclohexanol
Question- Sort the isotopes: thorium-232, sodium-26, flourine-17, bromine-90, iridium-164 into their categories: Alpha decay, beta decay, 0/1e emission, or 0/-1e capture
what is the mole fraction of ethanol, C2H5OH, in a solution of 47.5 grams of C2H5OH in 85 grams of water
The final temperature is 27.06 C. Presume that the volumes are additive, the specific heat of the solution is 4.184 J/g. C and that the density of the solution is 1 g/mL. Compute the enthalpy change, ΔH, in KJ for the reaction.
When the reaction 2 H2S g ~ 2H2 + S2 is carried out at 1065 degrees celcius, Kp = 0.012. Starting with pure H2S at 1065degrees, what must the initial pressure of H2S be if the equilbrated mixture at this temperature is to contain 0.250 atm of H2 (..
Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm3). What is the den..
The boiling point of a solution containing 10.44 g of an unknown nonelectrolyte in 50.00 g of acetic acid is 159.2°C. What is the molar mass of the solute?
You are fortunate to land a research position with Dr. Xavier Wray. Your first day in the lab the good doctor asks you to make a liter of 0.1 M citrate buffer pH 3.5 that you will need for the big extract procedure he will show you how to do after..
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