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Consider the decomposition of liquid water to form hydrogen gas and oxygen gas 2H2O(l) ?2H2(g) + O2(g). What can you say about delta H and delta U? Are delta H and delta U equal or is on greater than the other? Why?
Calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous under standard conditions.
Enthalpies are relative quantities measured as changes from some comparative states. The enthalpies of formation of elements in their standard states at 25 degrees celcius are taken to be zero by convention
an unknown mass of each of the given substances 1.sand tf70.4 c2.pyrex glasstf67.6 c3.watertf55.9 c 4.ethanol tf45.9 c
Evaluate the change in z (i.e., z) in going from the point (0,0) to the point (1,1) for the differentials: (1) dz = (x^2 + y^2) dx + xy dy and (2) dz = xy dx + xy dy
A solid mixture weighing 1.372 grams and containing only sodium carbonate and sodium bicarbonate required 29.11mL of 0.734M HCL for a complete titration. what is the grams of sodium carbonate and sodium bicarbonate in this mixture
A (identical to the starting ester) and E. Propose a neutral structure for each compound that is consistent with the data. Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily dr..
Consider the following reaction at equilibrium. what effect will increasing the volume of the reaction mixture have on the system?
Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids
When the mixture is ignited, gases are produced and 815 J of energy is released. To what volume will the gases expand against a constant pressure of 635 mmHg, if all the energy released is converted to work to push the piston?
The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 5.90 mL of a 0.380 M HCl solution to the beaker. How much will the pH change. The pKa of acetic acid is 4.760.
A certain bottled water lists a calcium concentration of 55 mg/L. What is its calcium concentration expressed in parts per million (ppm)
The pH after adding 10. mL of .10 M NaOH is 4.31. Calculate the total volume of .10 M NaOH that the buffered sample can absorb
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