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At room temperature (20 degrees Celsius), milk turns sour in about 64 hours. In a refrigerator (3 C) milk can be stored 3 times as long before it sours.a) Approximate the activation energy of the reaction that causes the souring of milk.
b) Explain how long should it take milk to sour at 40 C
lightbulb is visible light and that the average wavelength og the light is 550 nm, how many photons are emitted by the lightbuld each second?
How many kilowatt-hours of electricity would be saved? b) How many 2,000-lb tons of SO2 would not be emitted. c) If the utility can sell its rights to emit SO2 at $800 per ton, how much money could the utility earn by selling the SO2 saved by a si..
A sample of tris(hyroxymethyl) aminomethane (H2NC(CH2OH)3), which is a base, with a mass of 0.5875 g is dissolved in water as well as used to standardize a solution of hydrobromic acid.
The solubility of oxygen in lakes high in the Rocky Mountains is affected by the altitude. If the solubility of O2 from the air is 2.67 × 10-4 M at sea level and 25°C.
a first order reaction has an arrhenius constant for the reactionis 4.8 x 1011 sec -1 and an activation energy of 61.4
Calculate the amount of Tris (hydroxlmethyl) aminomethane (Tris) necessary to make 100mL of a 0.100M Tris buffer that is equimolar in
Why are acid chlorides more reactive towards nucleophilic substitution than ethyl esters? Give an explanation of why acid chlorides are more reactive toward nucleophilic substition than are the corresponding ethyl esters.
List the predominant species in Fe(NH4)2(SO4)2 6H2O solution. What is the net ionic equation for formation of iron (II) oxalate via the reaction of potassium oxalate and Fe(NH4)2(SO4)2 6H2O
If 30.0mL of 0.500M KOH are needed to neutralize 10.0mL of HCl of unknown concentration, what's the molarity of HCl?
What are the equilibrium partial pressures of CO and CO2 if CO is the only gas present initially, at a partial pressure of 0.872 atm?
Demonstrate that the moalr enthalpy is equal to the molar energy for a collection of one-dimensilonal harmonic oscillators.
Chromatography is all about intermolecular forces. Name two intermolecular forces that are involved in chromatography and the roles that they play during separation.
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