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The reaction that produces the water gas mixture is as follows: C(s) + H2O(g) ? CO(g) + H2(g) This reaction requires an input of 131 kJ of heat for every mole of carbon that reacts.
a. Is this reaction endothermic or exothermic?
b. What is the energy change for this reaction in units of kJ/mol of carbon?
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms. A urine sam..
A 247-ln fullback runs the 40-yd dash at a speed of 19.99 +/- 0.10 mi/h and has a wavelength of 7.79E-37. What is the uncertainty in his position based on the de Broglie wavelength
a mixture of hydrogen gas of 8.0 mol and oxygen gas of 4.0 mol is placed in a sealed evacuated container made of a
Compare the rms speeds. Compare the average kinetic energy. -Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than Sample B
a 10 ml sample of a solution of pbclo32 was diluted with water to 21 ml. a 10 ml sample of the dilute solution was
What's the volume of hydrogen that can be produced during the reaction of 25 g of iron with excess water, at 100 °C and 150 kPa, taking into account the following equation
calculate the change in entropy that occurs when 18.53 g of ice at -10.7°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel.
Suppose that you titrate 50.00 mL of a 0.0200 M Fe3+ solution (buffered at pH = 4.00) with 0.100 M EDTA. For all questions below, I am looking for a nonzero numbers.
Calculate the pH of 100. mL of 0.28 M NH3 before and after the addition of 4.5 g of NH4NO3, and account for the change. Assume that the volume remains constant.
One of the treatments for gangrene and the bends, is hyperbaric oxygenation. This occurs in a chamber in which oxygen is used at higher-than-normal pressures.
Determine the rate constant. b. What fraction of the initial N2O5 will remain after 13.0 h? c. What is the half-life? d. If the initial concentration of N2O5 was 0.222 M, then what concentration remain after 24 h?
calculate the number of grams of solute that would be needed to make each of the following solutions2.50 x 102 ml of
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