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The flow-through fraction in ion exchange chromotography of amino acids in which a cation exchange resin was used is expected to contain mainly
what is the constant k for this reaction. what is the rate of the reaction if the initial concentrations of [A] = .400M, [B]= .0500M and [C]= .075M
The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with l-fluoro-2,4-dinitrobenzene (FDNB). When the resulting compound is heated to 110oC for 24 h in the presence of 6 M HCl, th
A transformer has 350 primary turns and 1290 secondary turns. The input voltage is 120?V and the output current is 15.5A . Assume100% efficiency, What is the output voltage
At what temperature will the rate of the reaction triple compared to the rate at 25 degrees C if the activation energy is 56KJ/mole? ln(k1/k2) = -(Ea/R) [(1/T1)-(1/T2) R= 8.315 x 10 ^ -3 Kj/mol-K
The test tube contained some water (besides the metal) that was subsequently added to the calorimeter. Considering a higher specific heat for water, will the temperature change in the calorimeter be
the rate constant for the hydrolysis of lactose to galactose and glucose at 25 degrees C is .21M^-1 s^-1. What is the final concentration of lactose after 3.4 hours if the initial concentration was
A window of a car is found to be covered with 0.6cm of ice. If the area of the window is 1 m2, and the ice is at -12 degrees Celsius, what is the minimum heat required to melt all the ice
If a solution of sea water was found to have a molarity of .26 m, what is the new freezing point of this water? (Kf = 1.86 degrees C/M)
Decide whether or not each of the following metals dissolves in 1 M HCl . For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
What are the products of a double displacement reaction involving sodium hydroxide and hydrochloric acid
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
What is the final pressure of a gas that has an initial pressure of 13atm and a volume of 20L. final volume 50
A test charge of +2 micro C is placed halfway between a charge of +6 micro C and another +4 micro C sperated by 10cm. what is the magnitude of the force on the test charge
Compare the PV product of Ideal Gas 1 (MW=4 g/mol) with the PV product of Ideal Gas 8 (MW=222 g/mol)
A loop of wire in the shape of a rectangle rotates with a frequency of 162 rotation per minute in an applied magnetic field of magnitude 3 T, Find the maximum current through the bulb
An angry rhino with a mass of 2300 kg charges directly toward you with a speed of 4.30 m/s. Determine the speed of the ball after it bounces back elastically toward you
consider the ring structure of beta-D-glucose. it will give a positive test as a reducing sugar. How can that happen
Before starting this problem, review COnceptual Example 3. Suppose that hail described there bounces off the roof of the car with a velcity of +15 m/s. calculate the force exerted by the hail of the
Draw all the structural isomers for the molecular formula C4H9Br. Be careful not to draw any structures by crossing one line over another; the system needs to know where you intend connections to be
A block resting on a smooth surface explodes into three pieces. A 465 gram piece travels at 1.7 m/s, a 1999 gram piece travels 0.7 m/s, calculate the mass and direction of the third piece.
Calculate the following quantity: final volume of a 0.0521M solution prepared by diluting 24.7 ml of a 0.136M lithium carbonate with water
A solid sphere is released from rest on an incline. When it reaches the bottom, what fraction of its total kinetic energy is rotational
What is the osmotic pressure of a solution made from dissolving 30.0 g of glucose, C6H12O6, in 700 mL of water at 21.0C
A cylindrical tank 8 m in diameter is constructed of sheet iron 1.0 mm thick. The tank contains 2.3 m of water overlying 1.2 m of mud, Calculate the maximum stress in the tank