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Question- Your Flasks A and B are connected by a stopcock. Initially flask A contains 1000.0 mL of O2 at 50 kPa pressure, while flask B contains750.0 mL N2 at 100 kPa pressure, both at 25 ºC. The stopcock is opened and the gases mix. What is the mole fraction of O2 in the final mixture?
If possible just a brief explanation how you got the answer?
the vapor pressure of mercury Hg is .00180 mmHg at 77F. if Hg vapor reached equilibrium at this temperature in an enclosed space, what would the concentration of Hg be in the space. Assume normal atmospheric pressure.
0.4 grams sample of primary standard Na2CO3 treated with 45mL of dilute perchloric acid. Solution boiled to remove CO2 and then the excess HClO4 back titrated with 13mL of dilute NaOH
Which of the following does not have higher exp. S (entropy) than calculated S in pure H20, Which of the following effects is explained through ion pairing
Compute the osmotic pressure in torr of a solution containing 18.75 mg of hemoglobin in 15.0 mL of solution at 25.0oC. Define the molar mass of hemoglobin is 6.5 x 104 g/mol
Problem- The equilibrium constant for triiodide formation from iodine and iodide is about 700. the extinction coefficients of iodine and triiodide at the absorption maximum of triiodide are about 16 and 25,000 respectively.
A gas follows the equation of state PV = nRT(1+aP) where 'a' is a constant. For this gas, show that a = 1/T and K = 1/(P(1+aP) and verify that (dP/dT)v = a/K
Codeine, C18H21NO3, a commonly prescribed painkiller, is a weak base. A saturated aqueous solution contains 1.00 g codeine in 120 mL of solution and has a pH = 9.8. What is the Kb of codeine?
Sketch galvanic cells based on the following overall reactions. Show the direction of electron flow, the direction of ion movement through the salt bridge, and identify the cathode and anode
The degree of ionization of a 0.1M bromo acetic acid solution is 0.132. Compute the ph of solution and the pKa of bromo acetic acid
If you needed to determine the molarity of an acetic acid solution, CH3COOH, how would you proceed? CH3COOH(aq)+H2O(l) H3O^+(aq)+CH3COO^-(aq)
100.0 mL of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide. An appropriate indicator is used. Ka for acetic acid is 1.7 x 10^-5. AFTER 25.0 mL of NaOH is added, what is the pH in the flask at the following p..
Presuming merely translational degrees of freedom or freedom of motion, Explain what is the change in entropy (S) of the system caused by opening the stopper on this container
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