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At 22 degrees celsius the vapor pressure of pure acetone, C3H6O is 189.2 torr and of pure diethyl ether C4H10O is 451.8 torr. calculate the mole fraction of acetone:
a. in a solution with diethyl ether at 22 degrees celsius if the total pressure is 325.0 torrb. in the vapor state above the solution described in a) above
Find the equilibrium pH of a 10^-3 M NaCN solution by using graphical methods, try to find the equilibrium pH with the charge balance and separately with the proton condition.
A mixture consisting of 30ml of waste and 270ml of seeded dilution water has an initial DO of 8.55mg/l; after 5 day, it has a final DO of 2.40 mg/l. Another bottle containing just the seeded dilution water has an initial DO of 8.75 mg/l
a 290ml flask contains pure helium at a pressure of 756torr . a second flask with a volume of 480ml contains pure argon
Calculate the work if the process is carried out reversibly and isothermally. Calculate the work for question 1 if the process is carried out irreversibly.
at 50 degrees celsius the vapor pressure for methanol and ethanol are 406 and 222 torr respectively. given a mixture at
Write the half reactions and the overall cell reaction for each of the following voltaic cells: a)Al(s)/Al^3+(aq)//Cd^2+(aq)/Cd(s) b)Sn(s)/Sn^2+(aq)//Fe^3+(aq),Fe^2+(aq)/C (graphite)
You collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen, the temperature should not exceed -10.5C. The vapor pressure of ice at 273.16K is 611 Pa
Assume that the heat was completely absorbed by the water and no heat was absorbed by the reaction container or the calorimeter or lost to the surroundings. Calculate the Hrxn per mole of SiH4.
The molar absorptivity for the complex formed between bismuth (III) and thiourea is 9.32 x 103 L mol-1 cm-1 at 470 nm. Calculate the range pf permissible concentrations for this complex if the percent transmittance is to be greater than 15.0 % and..
The precipitate was filtered, dried, and weighed. A total of 1.55 g calcium flouride was collected. What was the percentage of CsF in the original sample.
what is the freezing point of a solution made by dissolving 352 g of ethylene glycol c2h6o2 in 648 g of water? the
What is the amount of energy packaged in a photon with a wavelength of 310 nm. Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m
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