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The total pressure of a mixture of N2O4 and NO2 is 1.5 atm. If Kp=7.1 (at 25 degrees C) calculate the partial pressure of each gas in the mixture.
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1370 Torr
How many grams of dry need to be added to 2.50 of a 0.700 solution of ammonia, , to prepare a buffer solution that has a of 8.65. for ammonia is.
A solution is made by mixing 45.0 mL of ethanol, C2H6O, and 55.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 5.80 gallons, what is the boiling point of the so
Without referring to a table, select from the following list the gas that has the largest value of b in the van der Waals equation: CH4, O2, H2O, CCl4, Ne.
Calculate the molarity of an aqueous solution that is 5.20% by mass CaCl2, given that the density of the solution is 1.19 g/mL
41.89 mL of NaOH were required to completely titrate 25.00 mL of a weak monoprotic acid. After 11.90 mL of sodium hydroxide had been added to the solution, the pH of the solution was 6.81. Calculate
What is the certainty in the position of an electron moving at 9.00x10^6 m/s. With an uncertainty of v=0.01x10^6 m/s
The plant manager would like to dump the wastewater into a nearby river. The local water quality control regulatory agency will allow at most discharge of 30,000 lb/h at a maximum salt content of 0.
calculate the expansion work done when 3.7 moles of ethanonl are converted to vapor at it's boiling point (78.3 degrees C) and 1.0 atm
Find the expression for the reversible pressure-volume work of an isothermal van der Waals gas with a constant number of moles (integrate the expression fully from Vi to Vf)
why is it not necessary to precisely measure the amount of water added to the sodium chloride in the procedure
Draw a Lewis structure for SO2 in which all atoms obey the octet rule. Show formal charges. 2 Draw a Lewis structure for SO2 in which all atoms have a formal charge of zero. Explicitly showing the z
why is a solution containing dissolved brass made basic with concentrated NH3 and again with acidified CH3COOH?
A fixed amount of gas at 35oC occupies a volume of 10.0 L when the pressure is 876 torr. Calculate the pressure in (torr) when the volume is reduced to 7.98 L at constant temperature of 35oC
The protein solution consists of albumin (40 g/L at Mm = 69,000 daltons), globulins (70 g/L at MW = 150,000 daltons), and fibrinogen (60 g/L at Mm = 340,000 daltons). Assume that T=25 C and the prot
Assuming the oil layer to be one molecule thick, calculate the approximate diameter in Angstroms (1 A = 10^-10 m) of a single molecule. (Use volume = area x depth.)
For a 15.0% (by mass) NaCl solution, find A) The mass of NaCl in 150g of the solution b) the amount of solution needed to obtain 35.0g NaCl c) mass of NaCl needed to make 1000g of the solution.
Combustion analysis of toluene, a common organic solvent, gives 4.12mg of {\rm{CO}}_2 and 0.959mg of {\rm{H}}_2 {\rm{O}}. If the compound contains only carbon and hydrogen, what is its empirical for
The amino acid histidine has three pKa's at 1.8, 6.0 and 9.3. In a 0.01 M solution of histidine, what is the concentration of protonated carboxylic acid at pH 7.4? The primary amine? The side chain?
Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: ? 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J =
The volume of seawater on Earth is about 3.3 x 10^8 mi^3. Because it contains salts, mostly sodium chloride, its density is about 1.03 g/mL, a little higher than that of pure water. The concentratio
Suppose that the molar concentrations for CO and H2 at equilibrium are [CO] = 0.05 M and [H2] = 0.08 M. Use the formula Kc[CO][H2]^2 to calculate the concentration of . Express your answer to one de