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Calculate the energy in the form of heat in kj, required to convert 225 grams of liquid water at 21.0 degrees Celsius to steam at 115 degrees Celsius. The heat of fusion is 0.33 kj/g, the heat of vaporization is 2.26 jk/g, specific heat capacities for liquid water is 4.18 J/g degrees C and for steam it is 1.92j/g degrees C
Decide whether or not each of the following metals dissolves in 1 M . For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
Which of the following peptides has a pI close to 5.5? Assume that the pKa value of the alpha-amino group is 9.6 and the pKa for the alpha-carboxylate group is 2.3. A. Ser-His-Arg-Asn
calculate the equilibrium constant for the reaction CO2 + H2O ? HCO3 - + H+ (Hint: Start by writing an equation that defines the equilibrium condition in terms of the Michaelis-Menten formulation of this reaction. Note that the kinetics was measur..
a gas mixture composed of helium and argon has a density of 0.605gl at a 741mmhg and 298k. what is the composition of
determine the volume of 0.1 m naoh that is required to react with all the acetic acid in a solution containing 25.0 ml
Name three similarities or differences between this hormone and insulin. Name three similarities or differences between this hormone and cortisone
what is tert-butyl capxylate? how 'bout its molecular structure?
The A and B reaction has a rate constant of 5 x 10^-2 min^-1 at 25 degrees Celsius. Calculate the concentration of A in the 10th minute of the reaction if [A]0 = 0.15 M.
Mass spectroscopy indicates the molar mass to be about 162 g/mol. What is the molecular formula of the unknown compound?
aluminum oxide used as an adsorbent or a catalyst for organic reactions forms when aluminum reacts with oxygen.4als
atomic masses. 6 pts an element has two naturally occurring isotopes isotope a has a mass of 120.9038 amu and a
A 70.0 g steam sample at 150.0 degree Celsius was converted to ice at -150.0 degree Celsius, calculate the total amount of heat removed in the process.
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