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15.0 g of ice cubes at 0.0°C are combined with 150. g of liquid water at 70.0°C in a coffee cup calorimeter. Calculate the final temperature reached, assuming no heat loss or gain from the surroundings. (Data: specific heat capacity of H2O(l), c = 4.18 J/g·°C;H2O(s) ? H2O(l) ?H = 6.02 kJ/mol)
Calculate the concentrations of the nonionized acid (HA) and of the ions of a 0.100 M formic acid (HCO2H) solution at equilibrium, and calculate % ionization.
calculate that how many liters of carbon monoxide gas, measured under the same conditions, is essential?
a chemistry student has made some stock 0.2 moll potassium permanganate solution. he wants to make 800 ml of 0.04 moll
the henry law constant kh for o2 in water is 5.6610-5g l-1 torr-1 at 20 degrees c. calulate the concentration of
In a particular solution, [Cr3+]=3.9x10-4 mol/L. What is the minimum pH at which Cr(OH)3(s) will precipitate from this solution. Assume the temperature is 25oC. For Cr(OH)3(s), Ksp=6.3x10-31 at 25oC. Give your answer with three digits
Draw the structure of an alkane or cycloalkane that has five carbon atoms and only secondary hydrogen atoms.
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.560 moles of a monoprotic weak acid
Discuss the relationship between the proper functioning of enzymes and the tertiary structure of proteins
What are the similarities between distillation and sublimation. When would you choose one over the other.
positrons cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
Assemble the alcohols (have the formula of C4H10) in the order of increasing reactivity with concentrated HCl.
What wavelength of light would be absorbed in raising an electron from the second level to the third level.
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