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A 0.485 g sample of KCl is added to 51.9 g of water in a calorimeter. If the temperature decreases by 1.23°C, what is the approximate amount of heat (in J) involved in the dissolution of the KCl, assuming the heat capacity of the resulting solution is 4.18 J/g°C?
stock soultions of thris base and tris acid how much of each would you use to make 100ml
How much heat must be supplied at 1000 degrees C if 1000 J of useful work is to be done by the engine?
Three moles of C(s) are heated from 300K to 600 K at constant P. Over the temperature range, Cp = -12.19 + 0.1126 T/K - 1.947 x 10-4 T^2/K^2. Find delta H and delta S.
Determine the density and atomic radius of tungsten (W) if it crystallizes in a face centered cubic arrangement with cell edge 399 pm.
the solubility of nitrogen n2 in blood at 37 degrees celsius and at partial pressure of 0.80 atm is 0.00056 moll.a
A 10.0 ml solution of 0.050 m agno3 was titrated with 0.025m nabr in the cell: s.c.e. || titration solution | ag(s) determine the cell voltage for these volumes of titrant: 0.1ml and 30.0 ml.
When carbon dioxide and water react to form carbonic acid, carbon dioxide is the only gas present. If pressure on the carbon dioxide is increased in the reaction environment what would happen to the equilibrium concentration of carbonic acid?
elemental sulfur occurs as octatomic molecules s8. what mass of fluorine gas f2 is needed for complete reaction with
Calculate the number of moles of oxygen gas produced from the completely catalyzed decomposition of 6.20ml sample of a 3.5% solution of H2O2. The density of the 3.5% solution of H2O2 is 1.01 g/ml.
what is the reaction when vo2 ions are addedto a ten fold excess of sodium sulfite in order to formvo2 ions? also why
At equilibrium 1.97e-02 mol of NOCl is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value..
A solution of pH=3.50, 25 mL of buffer 0.1 M CH3COOH/CH3COONa, we added of 1.00 mL of 0.1 M HCl pKa = 4.76 calculate the final pH?
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