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For the reaction:
SrCO3 (s) SrO(s) + O2 (g) at 1 atm pressure, the values H and S are both positive, and the process is spontaneous at high temperature. Which of the following statements about true?
A) G at room temperature is negative
B) The reverse reaction is endothermic
C) The process is exothermic at high temperature and endothermic at room temperature
D) The reverse reaction is nonspontaneous at room temperature
E) The change in entropy is the driving force for the reaction
The concentration of urea (MW=60.0g/mol) in a solution prepared by dissolving 16 g of urea in 39 g of H2O
Explain will a slower chemical reaction be expected to give a semilog absorbance/time plot with a slope that is more shallow or steeper that is closer to or further from the horizon than one that is faster?
Select the strongest interparticle force(s) present in Mg3N2.
Photosynthesis is estimated to produce 330.0 g (dry weight) of plant matter per square meter, 50% of which is carbon. Calculate the total number of grams of carbon "fixed" each year by 1000 square meters.
A 26.7 mL sample of HCl solution of unknown concentration was diluted to 100mL. A 20.0 mL sample of the diluted solution was titrated against .879 M solution of Ba(OH)2. the titration required 15.2 mL. Calculate the molarity of the initial solutio..
Calculate the de Broglie wavelength of a Helium atom moving at a speed of 244.0 m/s.
Problem- Ammonium nitrate is soluble in water. 16.50g of ammonium nitrate is added to an adiabatic calorimeter containing 100.0 g of water initially at 22.0C. The final temperature of the solution is 14.1C.
Calculate the pressure of a sample of gas collected over water at 25 degrees Celsius if the atmospheric pressure id 0.948 atm. 1 atm= 760 mm Hg.
compounds such as naphthalene and 14-dichlorobenzene find use as mothballs since they sublime at a slow rate at
Based on the G°' reported above, compute the equilibrium constant (at 25°C) and then comment on the spontaneity forward, backwards or at equilibrium of this reaction under standard conditions.
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.719 V. If the silver-silver chloride electrode is replaced with a saturated calome..
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..
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