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You determine the absorbance of a solution to be 0.355 when the concentration of the absorbing ion is 3.5 x 10-5 M. What is the molar absorption (extinction) coefficient of the ion? The length of the light path is 1.0 cm
a. 1.0 x 10^4 L/mole-cm
b. 1.2 x 10^-5 L/mole-cm
c. 9.9 x 10^-5 L/mole-cm
d. 1.2 x 10^5 L/mole-cm
the enzymes used in this experiment are only a partially purified pyruvate kinase preparation. this is because complete
An empty Erlenmeyer flask weighs 246.3 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 495.0 g. (a) What is the flask's volume? (b) How much does the flask weigh when filled with chloroform (d = 1.48 g/cm3)
Draw the resonance contributors of pyrrole and the cyclopentadienyl anion to demonstrate that all atoms are sp2 hybridized.
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? Draw possible ..
MgNH4PO4 • 6H2O loses H2O stepwise as it is heated. Between 40º and 60º C the monohydrate (MgNH4PO4 • H2O) is formed and above 100º C the anhydrous material (MgNH4PO4) is formed. What are the phosphorus percentages of the monohydrate and anhydrous..
Determine the delta H of decomposition of 1.000 mole of solid KCIO3 into solid KCI and gaseous oxygen.
Given that the partial pressure of O2 in the atmosphere is 0.20 atm and the concentration of H3O+ is 2.0 x 10-6 M, determine the half-cell potential for the reduction of O2 according to the reaction: O2 + 4 H3O+ + 4 e- ? 6 H2O E° = 1.229 V
Two gases are cobntained in gas bulbs connected by a valce. gas a is present in a 1 liter bulb at a pressure of 927 torr. gas b exerts a presure of 254 torr in a 1 liter bulb. the valve is 0pened and the two gas equilibrate. what is the partial pr..
The SO2 produced in copper recovery reacts in air with oxygen and forms sulfur trioxide. This gas, in turn, reacts with water to form a sulfuric acid solution that falls as rain or snow. Write a balanced overall reaction
Three helium nuclei fuse together, forming one carbon nucleus. The mass of carbon is less than three times the mass of helium. When helium fuses into carbon, which of the following occurs
The molar solubility of AgCl in 6.5 x 10^-3 M AgNO3 is 2.5 x 10^-8 M. In deriving Ksp from these data, which of the following assumptions are reasonable? A) Ksp is the same as solubility.
Acid-catalyzed dehydration of cyclobutylmethanol proceeds via an E1 mechanism and gives two alkenes.
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