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A process involves the performance of electrical work in the amount w' on a system. Show that if the process is carried out
Napthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon.
The speed of a photon is 4.5x10^5 ms^-1. If the uncertainty in its momentum is to be reduced to .01 percent, what uncertainty in its location must be tolerated
Poorly treated municipal wastewater is dis- charged to a stream. The river flow rate upstream of the discharge point is Qu = 8.7 m3/s. The discharge occursataflowofQd=0.9m3/sandhasaBODcon- centratio
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
Compounds in a and b were named incorrectly. On a sheet of paper draw the molecule that fits the given description. From the structure you drew determine the correct IUPAC name. Write the correct IU
A system that had work done on it but which receives or loses no heat from or to the surroundings has positive work or negative work; positive or negative delta E
Calculate the equilibrium constant at 298 K for the reaction of ammonia with oxygen to form nitrogen and water. The data refer to 298 K.
The solubility of oxygen gas at 50*C is 27.8 mg/L at an oxygen pressure of 1.00 atm. The solubility of nitrogen gas at 50*C is 14.6 mg/L at a nitrogen pressure of 1.00 atm. Assume that the air above
Rank from highest to lowest boiling point. items can be marked as equivalent. F2, NaCl, HCl, HF, Rank in Correct Order from Highest to lowest Boiling Point? Also which one is the highest boiling poi
Based upon the intermolecular forces present, rank the following substances according to the expected boiling point for the substance.
The four major attractive forces between particles are ionic bonds, dipole-dipole attractions, hydrogen bonds, and dispersion forces. Consider the compounds below
A 100.0 mL aqueous sodium chloride solution is 13.6% NaCl by mass and has a density of 1.12 g/mL. What mass of solute would you add to make the boiling point of the solution 104*C
A 300.0cm^3 sample of the solution is then treated with excess HNO3 and boiled to remove all the dissolved gas. A total of 0.955 L of dry CO2 is collected at 298 K and 0.972 atm.
A solution of HNO3 is standardized by reaction with pure sodium carbonate: 2H+ + Na2CO3 ---> 2Na+ + H2O + CO2 A volume of 23.66 ± 0.04 mL of HNO3 solution was required for complete reactio
The mass percent composition of the compound is 53.31% C, 11.19% H, and the rest is O. What is the molecular formula of the compound
Consider all constitution isomers where nitrogen is part of a 5membered ring. What are the minor resonance forms for these structures
the speed of a photon is 4.5x10^5 ms^-1. If the uncertainty in its momentum is to be reduced to .01 percent, what uncertainty in its location must be tolerated
What are the origins of these signals? Why does the spectrum contain two other signals of roughly equal height? What are the origins of these signals
Propose a synthesis for the following two molecules starting from methylcyclohexane. Methylcyclohexanol and Bromomethylcyclohexane. Show all synthetic intermediates and reagents.
A standard mixture containing 2.00 ppm and 2.50 ppm gave a Fe / Mn signal ratio (quotient) of 1.05. A 5.00 mL unknown Fe solution was mixed with 1.00 mL solution containing 12.5 ppm Mn
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original
A certain carbon-hydrogen compound contains 84.1% C by mass and the remainder is hydrogen. What is the empirical formula of the compound