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Question: When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.717 kJ/K, the temperature decreases by 0.290 K.
Calculate the molar heat of solution of KSCN.
If you used 0.165mL of acetic anhydride, and 0.167g of p-aminophenol what was the limiting reageant? How many moles of the non-limiting reageant remained after the reaction was complete
Hexane has a normal boiling point of 68.7 degrees C. what is the mole fraction of a nonvolatile solute in a hexane solution which has a vapor pressure of 600 torr at 68.7 degress C
Using the quantities given in the Procedure, calculate the theoretical yields for the mononitration of (a) acetanilide and (b) methyl benzoate. Acetanilide = quantity is .5 g and molar mass 135.17 g/mol. methyl benzoate= quantity is .55g. and mola..
A 50.0g silver object and a 45.0 g gold object are both added to a 55.5 mL of water contained in a graduate cylinder. what is the new water level in the cylinder.
Predict the partial vapour pressure of HO above its solution in liquid germanium tetrachloride of molality 0.10 mol kg-I
Nitrosyl bromide, NOBr, is 34 percent dissociated at 25 deg. C and the total pressure is 0.25 atm.
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
When 4.6 mol O2 is heated at a constant pressure of 3.25 atm, its temperature increases from 252 K to 300. K. Given that the molar heat capacity of O2 at a constant pressure is 29.4 JK-1 mol-1, calculate q, ?H, and ?U.
A mixture of 70 mole% butane and 30 mole % hyrdrogen is burned with excess air. Fractional conversion of 85% of the butane and 90% of the hydrogen are achieved
Add 0.06g of NaOH (MW=40g/mol) to 1 L of acid solution to 0.01 M of carboxylic acid at pH3. What is final pH (no volume change). Calculate pH of 0.2 M acetic acid and 0.05M sodium acetate
Metallic copper is formed when aluminum reacts with copper(II) sulfate. How many grams of metallic copper can be obtained when 54.0 g of Al react with 319 g of CuSO4?
calculate the theoretical and percent yields if 934 grams of sucrose c12h22o11 react and 493 grams of ethanol c2h5oh
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