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An air conditioner is a refrigerator with the inside of the house acting as a cold reservoir and the outside atmosphere acting as the hot reservoir. Assume that an air conditioner consumes 1.50 X 103 W of electrical power, and that it can be idealized as a reversible Carnot refrigerator. If the coefficient of performance of this device is 2.50, how much heat can be extracted from the house in a 24 hour period?
The Henry's Law constant (k) for carbon monoxide in water at 25ºC is 9.71 x 10-4 mol/(L•atm). How many grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm?
The atmospheric sulfur dioxide concentration over a certain region is 0.12 ppm by volume. Calculate the PH of the rainwater due to this pollutant. Assume the dissolution of SO2 does not affect its pressure.
Describe how you would prepare 150.0 mL of a pH = 5.00 buffer solution from a solution of 0.200-M aniline, C6H5NH2, a weak base
You need to produce a buffer solution that has a pH of 5.10. You already have a solution that contains 10 mmol (millimoles) of acetic acid.
If specific amount of carbon reacts with 1.00 g, 1.50 g, and 2.00 g of Hydrogen to form compounds of A, B, and C respectively,
A graduated cylinder contains 155 mL of water. A 15.0 g piece of iron (density = 7.86 ) and a 20.0 g piece of lead are added. What is the new water level in the cylinder?
Calculate the concentrations of all species at equilibrium for each of the given original mixtures. 1.2 mol of NOCl and 1.2 mol of NO in a 1.0-L flask? K = 1.6*10^-5 mol/L
A certain first-order reaction (A products) has a rate constant of 4.80×10-3 s^-1 at 45 C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration?
A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q.
The osmotic pressure of this solution was 0.00178 atm at 25 C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte
Determine the mass of the liquids in grams if this liquid is added to the beaker the combined mass becomes 238.254 grams? Given that the mass of beaker=225.08 g?
A student has sample of HNO3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then determine the final temperature of the mixture
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