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PVC processors use a very high molecular weight acrylic processing aid for production of Rigid PVC foamsheet of high thickness. Explain the type of Acrylic material and its properties they use. Also whether there is any scope for a substitute material.
Sketch a well behaved wave function in 1-d with the labels I. High probability and high kinetic energy, ii low probability and low kinetic energy, ii high kinetic energy and low probability. Which of these (I-iii) will potential energy be highest
a sample of oxygen gas has a volume of 2.73 dm3 at 21.0 c . at what temperature would the gas have a volume of 4.00
Enough of a monoprotic acid is dissolved in water to produce a 0.0194 M solution. The pH of the resulting solution is 6.26. Calculate the Ka for the acid.
Calculate deltaG at 45 degrees Celsius for a reaction for which delta H = -76.6 kj and delta S = -392 J/K. The answer is supposed to be in kJ, please help
Calculate the molarity of 464 mL of a solution that contains 135 g of sucrose C12H22O11
Calculate the pH of a solution that is 0.25M pyridine, C5H5N and 0.75M in pyridinium bromide, C5NHBr. (Kb for C5H5N= 1.7 * 10^-9)
A certain commercial process relies of the addition of NH4NO3 to a solution of their proprietary compound. The Chemist develops a plan to add 6.55 pounds of NH4NO3 to 14.0 gallons of water.
Choose one of the iron-sulfur electron transfer proteins described in the text. Please draw the structure of the iron-sulfur active site, indicating the amino acids tethering the FeS core to the protein
Draw the Lewis structure for SO42- and determine the formal charge on all 5 atoms in this polyatomic anion.
A 22.0 L volume of an ideal gas in a cylinder with a piston is at a pressure of 3.0 atm. Enough weight is suddenly removed from the piston to lower the external pressure to 1.5 atm. The gas then expands at constant temperature until its pressure i..
What is the approximate pH of a solution of the salt NH4(O2CCH3) (ammonium acetate)? No calculations -- only reasoning needed. pKa/pKb values in your notes
How many moles of a monoprotic acid with a Ka=4.9x10^-6 must be dissolved in 750 ml of H2O to produce a solution with pH=4.50
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