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If a system has 225 kcal of work done to it, and releases 5.00 x 10^2 kJ of heat into its surroundings, what is the change in internal energy of the system?
calculate the heat released when 176g of water at 23.0 degrees celsius are converted to ice at -10.0 degrees celsius?
A rolling axle, 1.50 m long, is pushed along horizontal rails at a constant speed v=3.00 m/s. A resistor R=0.400Ω is connected to the rails at points a and b, directly opposite from each other.
Methane burns in oxygen to produce carbon dioxide and water. Burning of 22.00 g of methane in oxygen will produce how many moles
A patient weighs 146 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution.
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries.
The Ksp for bismuth (III) iodide is 8.1 x 10-19. Calculate its solubility, molar solubility, and concentration of each species at equilibrium.
An unknown solution forms a white precipitate when treated with 6 M HCl. The precipitate is incompletely soluble in hot water but dissolves completely in NH3
A hot-air dryer is used to reduce the moisture content of 1500 kg/min of wet wood pulp from 0.75 kg H20/hg dry pulp to 0.15 wt% H20. Air is drawn from the atmosphere at 28 deg. C, 760 mmHg, and 50% relative humidity, sent through a blower-heater, ..
What is the path these electrons use in the Electron Transport Chain? Answer A. Complex I, Complex II, Complex III, Complex IV, O2 to H2O B. Complex II, Complex III, Complex IV, O2to H2O C.
Tremetol is a metabolic poison found in white snake root. Cows that eat white snake root have high trematol levels in their milk which can poison humans who drink the milk.
Two compounds have the same empirical formula. One substance is a gas, the other is a viscous liquid. How is it possible for two substances with the same empirical formula to have markedly different properties?
Calculate each of the following quantities for this change of state. If it is impossible to calculate a quantity from this given information, state this. (a) q; (b) w; (c) ?U; (d) ?H.
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