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Compound Z has a solubility limit of 32.5 g/L in diethyl ether. Compound Z has a solubility limit of 2.5 g/L in water. You are given a 100mL aqueous solution that contains 200mg of compound Z. If you do three 33.3mL extractions of Z using diethyl ether:(1) what is the K value for compound Z in this biphasic system, (2) how much do you remove in each individual extraction, (3) how much of compound Z is extracted with those three 33.3 mL extractions added together, AND (4) how much is still in the water layer at the end of all three extractions?
Predict what will happen and check your predictions. Change the styling so that instead of the color changing the link becomes bold when you hover over it. (You need to use the font-weight property.) Why does the white background extend to the end..
SLIGHTLY LESS than 100 degrees Celsius, but the final boiling point was AT 100 degrees Celsius. Why should the boiling point rise as the distillation progresses?
A graduated cylinder contains 148 of water. A 17.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
What happens to it after bromination of Cholesterol takes place? (ie- why is it that bromination allows you to separate it from cholesterol?) 3) Give a stepwise mechanism for the debromination step
How many kilowatt-hours of energy are necessary to heat the air in the house from 5degree C to 25degree C
The thermostat in a refrigeraor filled with cans of soft drinks malfunctions and the temperature drops to below 0 degree Celsius. The contents of the cans of diet sodas freeze, rupturing many of the cans.
A young child grows rapidly, with high levels of cell division and high energy requirements. If you were planning the child's diet, which food groups would you emphasize, and why? Which good groups would you deemphasize, and why?
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 C. How many joules of energy are necessary to melt 46.0 grams of ice? (Use 2.1 J/g.C for the specific heat of ice, and 334.4 J/g for the heat of fusion of water.)
A mixture initially contains A ,B ,C and in the following concentrations:[A] = 0.700 ,[B] = 1.35 , and [C] = 0.700 . The following reaction occurs and equilibrium is established:
How many grams of water can be cooled from 34°C to 11°C by the evaporation of 85 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g-K.)
The k1 is on top of the right pointing arow and k2 is below the left pointing arrow and the arrows are like they are in equilibrium. The k3 is above the lone arrow in the second reaction. In the find expression part the N02 is a subscript of P
What is the role of sodium sulfite? How does it work? Please use an equation to explain this. Why was the work-up step so important in this experiment? What can be found in the top layer, and the bottom layer in the extraction step?
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