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When liquid water at 0°C and 1 atm is converted to ice at 0°C and 1 atm, 6.01 kJ mol-1 of energy is released as heat to the surroundings. Calculate the change of entropy for the water, ΔSwater , and for the surroundings, ΔSsur , when 1.00 mole of water freezes at 0°C and the surroundings are at (a) 0°C, (b) -2°C. Explain the physical origin of the difference.
Draw the full and complete mechanism for the reduction of a carboxylic acid using H2 over platinum. The product is a primary alcohol. Just use ethanoic acid as your model compound.
Which of the following substances has the highest boiling point a. HF b. Ar c. CH2Cl2 d. C2H6
Under certain condition for the reaction A ? B, ?H = 14.2 kJ and ?S = 27 J/K. At what temperature in K is the reaction at equilibrium?
The test tube contained some water (besides the metal) that was subsequently added to the calorimeter. Considering a higher specific heat for water, will the temperature change in the calorimeter be higher, lower, or unaffected by this technique e..
Write out the additional equations you would need to consider. d. Confirm that the number of equations is equal to the number of unknowns.
How much work is done in kilojoules when the volume of a cylinder goes from 2L to 3L and stays at 2.5 atm? Are the surroundings doing work on the system or system doing work
Assuming that the specific heat of the solution is 4.18 KJ and that the calorimeter itself absorbs a negligible amount of heat, calculate delta H in kilojoules for the reaction K2O+H2O->2KOH
Write the formula for each component in a buffer solution of acetic acid and it's salt. How would you prepare 20 mL of a solution having pH = 2.00 by dilution of 0.10 M HCL
The spherical r theta phi equation needs to be used but am having difficulty with the integral of the equations.
What effect would each of the following have on the calculated molecular weight of an unknown. Would the calculated value be higher than the true value. Lower. Same
A mixture of NACI and sucrose of combined mass of 10.2 g is dissolved in enough water to make up 250 mL solution. The osmotic pressure of the solution is 7.32 atm at 14*C. Calculate the mass percent of NACI in the solution.
How do you calculate solubility percentage? For example if a out 5 grams of sugar in 50 ml of water, with the temperature of water being 20 degrees.
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