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While a 5.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.403 kJ•K-1, the temperature decreases by 0.480 K. Compute the molar heat of solution of KCl.
what is the mole fraction of A in the vapor above a binary solution of A and B in which the mole fraction of A is 0.30?
Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide
question calculate the ph of a buffer solution which contains 0.25 m benzoic acid c6h5co2h and 0.15 m sodium benzoate
What is the density (in g/L) of a mixture of equal numbers of moles of N2 and CO2 gas in a 8.00 L container at 298K if the pressure exerted is 19.0 atm
How many grams of aspirin were lost in the washing process you used to purify your product, assume you used 50 ml of water for washing. The solubility of aspirin in water is 0.33 g per 100 ml at room temp. actual yeild=2.582 g theoretical yield= 2..
A 115.0mL sample of a solution that is 3.0×103M in Ag(NO)3 is mixed with a 225.0mL sample of a solution that is 0.14M in NaCN . Explain what concentration of Ag+ remains
The mixture in the flask is ignited by a spark as well as the reactions represented below occur until one of the reactants is completely consumed.
a mixture of methane and water vapor pressure is passed over a nickel catalyst at 1000k. the emerging gas is collected
What is the proper coeffcient for water when the following equation is completed and balanced for the reaction in the basic solution. C2O4^2-(aq)+MnO4^-(aq)--->CO3^2-(aq)+MnO2(s)s
for the set of elements Li, O, Ne, and Na which element has the largest atomic radius. Explain any deviation from the expected pattern
A subsequent titration revealed that the concentration of the unknown acid was 0.868 M. What was the concentration of the diluted acid om the Erlenmeyer flask?
what is the composition of vapor of a pentane-hexane solution that has a vapor pressure of 373 torr at 25 degree
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