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The combustion of toluene has a total energy of -3.91*10 to the third power kJ/mol. While 1.55g toluene (C7H8) undergoes combustion in a bomb calorimeter, temperature increases from 23.12 to 37.57 degrees Celsius. Find out the heat capacity of the bomb calorimeter.
Ethylene glycol, antifreeze, has a density of 1.11 g/cm^3.a. What is the mass, in grams, of 410 mL of ethylene glycol?
the hydrolysis of acetylcholine is catalyzed by the enzyme acetylcholinesterase which has a turnover rate of 25000 s-1.
Consider the following reaction at constant P. Use the information here to determine the value of ?Ssurr at 355 K. Predict whether or not this reaction
What is the freezing point of a solution prepared by dissolving 39g of benzene (C6H6) in 500g of cyclohexane. Fp for cyclohexane is 6.6 C Kf=20.0 C/m.
What are the concentrations of OH- and H in a 0.00067 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
Barium sulfate, , is used in medical imaging of the gastrointestinal tract because it is opaque to X rays. A barium sulfate solution, sometimes called a cocktail
the sun's diameter is 1.4E9m and its effective surface temperature is 5800K. Assume the sun is blackbody and estimate the rate of energy loss by radiation from the sun
A 40.0 mL sample of 0.150 M Ba(OH)2 is titrated with 0.400 M HNO3. Calculate the pH after the addition of the following volumes of acid, and plot the pH versus milliliters of HNO3added.
What is the pH of a sodium formate solution prepared by adding 0.680 grams of sodium formate to 100.0 ml of water at 25.0 oC? The Ka at 25.0 oC for formic acid is 1.8 × 10-4.
How many grams of KCOOH are needed to prepare 150 ml a buffered solution of pH 3.85 if the acid concentration, HCOOH is 0.1M
an air bubble is expelled by an underwater diver at a depth of 19.0 m. as the bubble rises to the surface the pressure
In a haloform reaction with chloride, what reaction step is pertinent to the synthesis of molecular chloride?
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