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Urease enhances the rate of urea hydrolysis at pH 8, 20 degrees C, by a factor of 1E14. If a given quantity of urease hydrolyzes a given quantity of urea in 6.0 minutes at 20 degrees C and pH 8, how long (in years) would it take for the same amount of urea to be hydrolyzed under the same conditions in the absence of urease? Assume sterile conditions such that bacteria cannot affect the time.
2.51 moles of a gas occupies 50.88 liters, and its density is 1.43 g/L at a particular temperature and pressure. Calculate the molar mass of the gas.
An ice cube that is 25.00 g (temp -20 C) is placed into 225.00 g of H2O that is 22 degrees C. What will the temperature be when the ice cube has just melted. Use 4.184 J/K*g for the specific heat capacity of ice and water.
Mark all the true statements A.) The value of [R]/[P] is the equilibrium constant B.) The amount of P present will not change. C.) The concentration of [R] is constant. D.) The reaction P--> R no longer takes place
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group, and is a(n) alkane.
a student had 1.00 l of a 1.00 m acid solution. much to the surprise of the student it took 2.00 l of 1.00 m naoh
A flask with stopper has a mass of 79.310g. A 25.0 ml sample of an unknown organic liquid was pipeyyed into the flask and gave a total mass of 97.010g. Find the density of the unknown liquid.
At equilibrium the concentration of NO in the vessel is 0.161M. At equilibrium the vessel contains N2, H2O and H2. What is the value of the equilibrium constant Kc for the following reactions
This solution is then analyzed for nitrate ion by adding iron (II) sulfate solution and more sulfuric acid, heating the test tube and its contents. The nitrate ion reaction is positive.
The vapor pressure of water at this temperature is 23.76 Hg. The piston is depressed at constant temperature so that the gas is compressed to a volume of 2.67 L. What is the vapor pressure in the compressed gas mixture
The equilibrium constant Kc for the decomposition of phosgene, COCl2, is 4.63 x 10^-3 at 527 deg. C
Why must all F- solutions be measured and kept in plastic ware rather than glassware. Why do you measure the most dilute solutions first when using ISE. Why do we not use TISAB when determining the selectivity coefficient.
which works better as a solvent for benzoic acid water or the solvent pair of methanol and water.
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