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Sodium phosphate is added to a solution that contains 0.0014 M aluminum nitrate and 0.078 M calcium chloride. The concentration of the first ion to precipitate (either Al3+ or Ca2+) decreases as its precipitate forms. What is the concentration of this ion when the second ion begins to precipitate?
How does the enthalpy change for the neutrlization of hydrochloric acid compare to the enthalpy change for the neutralization of aceitc acid. Explain any similarities or differences.
The second equivalence point was reached after 35.75mL of 0.1005 M hydrochloric acid was added to a 50.00 mL solution containing your sodium carbonate unknown., calculate the pH of the solution at the second equivalence point
What is the percent ionization of a 0.177 M solution of this acid?
Nitrogen monoxide is produced by combustion in an automobile engine. According to the following reaction, how many moles of oxygen gas are necessary to form 0.285 moles nitrogen dioxide
Sodium azide (NaN3) is the chemical used in air bags. Sensors detect the initial crash and electrically initiate the explosion of a small charge of this compound
Caculate the kinetic energy of a mole of oxygen atoms, all moving at a speed of 400 m/s (10000 mph).
What is the change of molar Gibbs energy for the freezing of water at -10C? The vapor pressure of H2O (liquid, -10C) is 286.5Pa. The vapor pressure of H2O (solid, -10C) is 260Pa. At -10C the molar volume of supercooled water
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.500 it M solution of ammonia, NH3, to prepare a buffer solution that has a rm pH of 8.99?
Cosider a light sensitive reaction. What energy, in joules per photon, is needed to drive the reaction if delta H rxn is equal to 305 kJ/mol?
determined the percent Co by converting your product into a blue-violet colored Co complex and measuring the absorbance in the Spec 20 instrument. What is the formula of this blue-violet complex?
calculate the value of DGo in kJ for the combustion of 1 mole of methane to form carbon dioxide and gaseous water at 298 K.
propose a mechanism for the conversion of glucose 6-phosphate into fructose 6-phosphate by phosphoglucose isomerase based on the mechanism
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