Determine how much caffeine should be obtained
Determine how much caffeine should be obtained when a mixture composed of 20 mL of water layer with the 25mg of caffeine in it before extraction and 2 x 6 mL for the CH2Cl2 layers.
Kp(CH2Cl2/water) = 3.0;
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Assume that the specific heat of the rocks is 0.082 J/g-k, large beds of rock are used is some solar-heated homes to store heat. Determine the quantity of heat absorbed by the 50.0 kg of rocks if their temperature increases by 12.0 degree Ce
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When 50.00 mL of 0.100 M AgNO3 and 50.00 mL of HCl are mixed in a constant-pressure calorimeter, the temperature of the mixture increases from the 22.30 to 23.00degree Celsius, the temperature increase is caused by the following reaction :
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Determine the probability that among seven randomly chosen graduates, at least one finds the job in his or her chosen field in a year of graduating.
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