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Q1) Determine the weight in grams of acetic acid (FW = 60.05) and Na Acetate (FW = 82.03) needed to prepare 1 L of a standard buffer at pH 4.20 with a total acetate concentration of .25 M. (pka=4.76)
Q2) Three polypeptides listed below are in a mixture. Of the three, which would migrate most rapidly (i.e. elute first) through an anion-exchange resin at pH 7.0?
ATKNRASCLVPKHGALMFWRHKQLVSDPILQKRQHILVCRNAAG
GPYFGDEPLDVHDEPEEG
PHLLSAWKGMEGVGKSQSFAALIVILA
Organic chemistry- When 2-butene reacts with hydrogen chloride gas, only one product is detected, whereas when 1-butene reacts similarly
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
how many moles of hydrogen ions were converted to water when 85. ml of 1.0 M hydrochloric acid were neutralized by sodium hydroxide.
Indicate the oxidation number of carbon and sulfur in the following compounds
Draw a labeled reaction coordinate diagram of the reaction. State the type of catalysis that is occurring and in which step
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
what is the skeleton equation for heating copperii sulfide in the presence of diatomic oxygen produces pure copper and
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 deg C , the total pressure in the container is 3.60 atm. Calculate the partial pressure of each g..
Sucrose (C12H22O11), which is commonly known as table sugar, reacts in dilute acid solutions to form two simpler sugars, glucose and fructose, both of which have the formula C6H12O6
small spheres of equal mass are made of lead density 11.3 rm grm cm3 silver 10.5 rm grm cm3 and aluminum 2.70 rm grm
A solution is prepared by dissolving 1.50 g of compound in 25.0 mL H20 at 25 degrees Celsius. The boiling point of the solution is 100.45 degrees Celsius.
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