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Indicate which of the following are reasons for performing a simple distillation in this procedure (more than one answer may be correct): a. To obtain pure diethyl ether. b. To isolate the nonvolatile solute. c. To isolate a volatile impurity. d. To make extra work for the student. e. To remove the solvent fro the solute.
Calculate the range of pH values for which Mg(OH)2 will not precipitate but Fe(OH)3 will. Assume the solution is 0.0500 M
A 0.250 mol sample of argon gas has a volume of 9.00 L at a pressure of 875 mm Hg. What is the temperature (in celsius) of the gas?
A free electron initially at rest at the back of Cathode ray tube in your television accelerate through a potential
What is the pressure in a 10.0 L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K ?
What velocity would an electron 9.11*10^-31 kg need for its de Broglie wavelength to be that of red light 745nm ?
What is the PH change of a 0.270M solution of Citric Acid (pKa = 4.77) if citrate is added to a concentration of 0.145M with no change in volume?
Calculate [CO32- ] in a 0.025 M solution of CO2 in water (H2CO3). If all the CO32- in this solution comes from the reaction shown below, what percentage of the H+ ions in the solution is a result of the dissociation of HCO3‾?
Consider the following reaction in a closed reaction flask. If 1.50 atm of gas A is allowed to react with 0.500 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask a..
The boiling point of another member of this homologous series was found to be 309 rm K. What is the likely molecular formula for this compound?
Explain why the boiling point of an aqueous solution that is 1.0 m in glucose (C6H12O6) is 100.51oC whereas The boiling point of an aqueous solution that is 1.0 m in NaCl is 101.02 oC .
Suppose that a 2.00-L metal bottle that contains air at 113K and 2.5 atm pressure is sealed off. If we inject 60.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.519 grams of iron and 21.0 mL of 0.590M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol) of the non-limiting reactant will remain unuse..
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