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During the fermentation of wine, a buffer system consisting of tartaric acid and potassium tartrate is formed by a biochemical reaction. Assuming that at some time the concentration of potassium tartrate is twice as high as that of tartaric acid, calculate the pH of the wine. The pKa of tartaric acid is 2.96.
What mass of Ar gas (in g) is contained in a 6.40 L tank in which its pressure is 0.703 atm and the temperature is 64.0°C? Do not enter units.
Calculate the freezing point of 0.15m calcium chloride aqueous solution. Assume that the molal freezing point depression constant
Use the distance between the charges (the spring length) BEFORE contraction to get the spring force (using coulomb's law) and divide that by the distance that it contracted to get the spring constant OR
corn farmers typically use 5000 kg of ammonium nitrate per square kilometer of cornfield per year. Ammonium nitrate can be prepared by the following reaction. how much nitric acid would be needed to make the fertilizer needed for 1km2 of cornfield..
what masses ofnbsp calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kgnbsp calcium phosphate
Describe the effects of a catalyst on a reaction; (what is changed what is not), include a rough sketch showing the reaction profile for an uncatalyzed reaction and a catalyzed reaction
iodination is electrophilc aromatic substion reaction in which electrophile is Iodonium (I^+) , it will updatined by the reaction of sodium hypochlorite (NaOCl) with iodide ion (NaI), which is strong electrophile that reacts quickly in an electrop..
Calculate the energy and the wavelength, in nanometers, of light emitted when an electron in an excited hydrogen atom
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
Determine the value of work (w) when a piston of volume 0.2 litres expands against an external pressure of 200 kPa to a volume of 3.4 Litres?
The same apparatus is them filled with an unknown gas at 32.3 C to a pressure of 645 mm Hg. It takes 5 hours 34 minutes and 25 seconds for the pressure to fall to 207 mm Hg. Calculate the molar mass of the unknown gas.
In a 4.09 liter container at 25C are placed 1.23 moles of O2 gas and 3.20 moles of solid C(graphite). If the carbon and oxygen react completely to form CO(g) what will be the final pressure in the container at 25C
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