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Question- This is about extracting organic compounds from aqueous solutions. Will the organic phase be the upper or lower layer when each of the following solvents is mixed with water? Why? If an ice cube was placed in each of these solvents, would it float or sink? Why? Solvents are: methylene chloride, pentane, toluene, diethy ether.0
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A 0.10-cm^3 sample of a solution containing a radioactive nuclide (5.0x10^3 counts per minute per mL) is injected into a rat. Several minutes later 1.0 cm^3 of blood is removed. The blood shows 48 counts per minute of radioactivity. Calculate the ..
The combustion of 135mg of a hydrocarbon produces 440mg of CO2 and 135mg of of H2O. The molar mass of the hydrocarbon is 270 g/mol. Determine the molecular formula of this compound ?
for nitrogen gas dissolved in blood serum the henrys law constantis 8.42 times 10-7 mol l-1 mmhg-1. if a scuba diver
if the level of solution in the column drops below the level of the resin, channels will be formed in the resin column.How will this influence the efficiency of ion exchange in the column?
What volume to the nearest 0.1 mL of 4.50-M NaOH must be added to 0.400 L of 0.150-M HNO2 to prepare a pH = 3.20 buffer
In the formation of diacetylferrocene, the product is always the one in which each ring is monoacetylated. why is no diacetylferrocene produced in which both acetyl groups are on the same ring
a metal container holding xenon gas xe has a pressure of 458 torr at 20 degrees celcius. at what temperature will the
What is the absolute error in pKa according to pKa from the mid-point pH value? The true value is given in # (5) (9) What is the relative % error in pKa according to pKa from the mid-point pH value?
If the volume of EDTA needed to reach the endpoint was 26.9 mL in trial one, 27.3 mL in trial two and 26.4 mL in trial three, what is the hardness of the water in ppm + 95% confidence limit
The numbers above are also the only numbers I am given. I do not have delta G's of molar G's. If you have an answer that solves for the G's and shows me step by step how to solve the problem, you will get five stars.
Calculate the pH of 0.1000 M Propanoic acid (HC3h502, Ka=1.3x10^-5) after 0.020 moles of HCl is added to 1.00 L solution. Calculate the pH of 0.1000 M Sodium Propanoate NaC3H5O2 (HC3H502, Ka=1.3x10^-5) after 0.020 moles of HCl is added to 1.00 L so..
On a warm summer day in Athens, the temperature is 33C (dry bulb temperature) and the relative humidity is 60%. What is the absolute humidity (kg/kg Dry air)
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