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When a 2.00 L flask containing 0.340 atm of gas A is joined with a 4.00 L flask containing 0.820 atm of gas B, and the stopcock between the flasks is opened, and the gases are allowed to mix thoroughly at constant temperature, what is the resulting total pressure of gases in the now-joined flasks? (assume no reaction between the gases and that the gases behave ideally)
A. 1.09 atm
B. 0.660 atm
C. 0.223 atm
D. 1.16 atm
What is the minimum number of liters of air that must pass over a sample of the compound at 25oC to vaporize 1.0 mg of it? Hint: You know the Vapor Pressure from question "a" above and you are given the temperature and mass.
a certain substance has a molar enthalpy of vaporization of 31.6 kj mol. How much of the substance is in a sample that requires 57.0kJ to vaporize?
VO2 can exist in insulating or metallic form, depending on temperature and pressure.
A power plant burns 10^4 kg hr-1 of coal containing 2.5% sulfur. The effluent is released from a single stack of height 70 m. The plume rise is normally about 30 m.
Include in your explanation from which C and in what form the H would have to leave: [H+, H(with one electron), H(with two electrons)].
When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. The net chemical equation is Cu(2+)(aq) + 2OH(-)(aq) --> Cu(OH)2(s)
Using phosphoric acid, what concentrations are needed to give a pH 8.10 solution with an ionic strength of 0.100 M?
Why are the crude ester mixtures washed with aqueous NaHCO3?2. You wish to test 9 esters for antitumor activity. One and only one of the 9 esters will actually have antitumor activity. You will prepare the esters from an alcohol and an acid as was..
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5
Compare the proposed reaction mechanism for the sodium hypochlorite oxidation of cyclohexanol with that involved in the chromic acid oxidation
How many grams of water can be cooled from 45c to 15c by the evaporation of 65g of water? (The heat of vaporization of water in this temperature range is 2.4kj/g. The specific heat of water is 4.18j/k*mol .)
A 0.5220g sample of an unknown monoprotic acid was titrated with 9.96*10^-2 M NaOH. The equivalence point of the titration occurs at 23.84mL.
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