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A 2.300 g sample of quinone (C6H4O2) is burned in a bomb calorimeter whose total heat capacity is 7.854 kJ.*C. The temperature of the calorimeter increases from 24.56 *C to 32.01 *C. What is the heat of combustion per gram of quinone and per mole of quinone?
How many grams of dry NH4Cl need to be added to 2.30 L of a 0.100 M solution of ammonia,NH3, to prepare a buffer solution that has a pH of 9.00
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
Aldrin (an insecticide) has a logKow of 5.8, while atrazine (an herbicide) has a logKow of 2.6. Kow is the octanol-water partition coefficient (Spiro pp. 498). Which pesticide will bioconcentrate to a greater extent
The fact that boiling point of a pure solvent is lower than the boiling point of a solution of the same solvent is a direct consequence of the. freezing-point depression of the solution.
K = 0.040 for the reaction below at 450C. If the reaction starts with .20M Cl2 and .20M PCl3 what concentration of PCl5 will be present at equilibrium PCl5(g) PCl3(g) + Cl2(g)
A paint mixture containing 25.0 wt% of a pigment and the balance water sells for $18.00/kg, and a mixture containing 12.0 wt% pigment sells for $10.00/kg. If a paint retailer produces a blend containing 17.0 wt% pigment, for how much ($/kg) should..
306 ml of a 0.208 M solution of silver nitrate will react with 146 ml of a 0.170 M solution of sodium phosphate to produce how many grams of silver phosphate precipitate
the simplest cycloalkyne has how many carbons? What is the Isoelectric point for aspartic acid. (Amino Acid PI)
A voltaic cell is constructed by immersing a strip of silver metal in a 1.0M AgNO3 solution and a strip of Cadmium metal in a 1.0M Cd(NO)3 solution. the circuit is completed by a wire and a salt bridge in the usual way.
1. what mass of naohsnbspmust be added to 300 ml of hcl 0.25 m in order to completely neutralize this acid?2. during a
What volume (mL) of the solute ethanol should be added to 6040 g of the solvent acetone to generate a solution that contains 16.0 pph by mass ethanol
determine the mass of Carbon Monoxide produced when 0.64g of antimony(III) oxide reacts with carbon according to the following equation: Sb2O3 + 3C yields 2Sb + 3CO
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