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Using a sample that is consisting of 1.0 mol of a Van der walls is compressed from 20.0dm3 to10.0 dm3 at the temperature 300K. In the process, 20.2 kilo joules of work is done on the gas . calculate DeltaH for the process. Given u ={(2a/RT) - b}/Cp,m; with Cp,m = 38.4j/K.mol; a=3.60dm6 atm and b= 0.44 dm3.mol.
The half life for the radioactive decay of C-14 is 5730 years and is independent of the initial concentration. How long does it take for 25% of the c-14 atoms in a sample of C-14 to decay?
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
If you fill the larger tank with oxygen to a pressure of 135 , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
How many atoms of He gas are present in a 450 mL container at 35°C and 740 mmHg
a 0.374g sample of a metallic element m is completely dissolved in 100ml of 0.500n sulfuric acid. the liberated
A 125 lb patient is to receive a drug at a rate of 0.300 mg per 1.00 kg of body weight. If the drug is supplied as a solution containing 5.00 mg/mL, how many milliliters of drug solution should the patient receive
Two parallel disks having diameters of 50 cm are separated by a distance of 10 cm. One disk also has a 20-cm-diameter hole cut in the center. Find the shape factor from the disk A1 to the one without a hole A3.
Consider a 0.37M solution of each of the following salts in distilled water. Will the solution be acidic, neutral, or basic? You may need to reference a table of Ka and Kb tables values.
how many grams of solute are in the solution 498 mL of a.850 M Na2So4?
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
Give a stepwise mechanism showing the base-induced formation of diphenylacetylene from meso-stilbene dibromide. Use curved arrows to symbolize the flow of electrons.
Consider the following equilibrium process at 686°C: CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M.
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