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The normal boiling point of liquid bromine is 58.2°C. At 9.3°C the equilibrium vapor pressure of liquid bromine is 100 torr. From this data, calculate the standard state Gibbs energy of for
Naphthalene (C10H8) is a solid aromatic compound often sold as mothballs. The complete combustion of this substance to yield CO2(g) and H2O (l) at 25oC yields 5154 kj/mol .
The human eye contains a molecule called 11-cis-retinal that changes conformation when struck with light of sufficient energy. The change in conformation triggers a series of events that results in
When air pollution is high,ozone can reach .60 ppm. How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mmHg and the temperature is 79 degrees Farenhe
An anakysis of river water yields C : N : P = 41.3 : 2.4 : 0.3. Compare this to the Redfield Ratio of C : N : P = 106 : 16 : 1.What is the CEC (in meq/100 g) of a soil that contains 25.8 mcg/ml Ca2+,
Liquids A and B form ideal solutions. A mixture of the vapors of A and B, which is 40 mole % in A, is contained in a piston and cylinder arrangement. This arrangement is kept at a certain constant t
Benzene and toluene form essentially ideal solutions. A particular mixture that consists of two moles of benzene and three moles of toluene has a total vapor pressure of 280 mmHg at 60 degrees celci
A mixture of A and B is found to obey Raoult's Law. At 60 degrees celcius the vapor pressure of pure A is 400 mm HG and that of pure B is 650 mm HG. Find the composition of the vapor phase above a
A common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal into an aqueous solution of a compound of another metallic element.
If the annual production of acetyl salicylic acid in the U.S.A. were converted to 5-grain aspirin tablets, approximately how many tablets would there be for each person?
The given data of pyroxene analysis is given w%. SiO2=48.90, TiO2=.12, AL2O3=3.86, Fe2O3=4.65, Cr2O3=0, FeO=25.35, MnO=.51, MgO=6.87, CaO=7.96, Na20=.58, K20=.20, H2O+=.57, H2O-=.35, TOTAL 99.92.
What is its characteristic wavelength? [Hint: Recall that the kinetic energy of a moving object is E=1/2mv^2 , where m is the mass of the object and v is the speed of the object.]
Since the freezing point of a solution depends on the relative number of particles, what would you caclcu;ate to be the freezing point of 0.1 m solutions in water of (a) NaCl, (b) BaCl2? Assume that
Halothane, C2HF3BRCl, is a commonly used gaseous anesthesia. One suggested dosage is 3.0% halothane by volume. What is the partial pressure of halothane if air administered to the patient is at a p
If a 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power company charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?
What would the major product be of the reaction of 1 mole of 3,4-dibromoheptane with 1 mole of KOH in ethylene glycol?
Two 1.00g masses are attached by a spring with force constant k= 500 kg s-2. Calculate the zero point energy of the system and compare it with the thermal energy kT. If the zero point energy were c
Calculate the zero point vibrational energies for -O-H and -O-D bonds.If a reaction of these bonds involves breaking them, what does this suggest about the relative rates of the reactions of -O-H a
Calculate the velocity of an electron in the n=1 state of H atom? Show that the de Broglie wavelenth of an electron moving at velocity(velociy of an e- in n=1 state of H atom) corresponds to circum
Suppose a student comes to lab unprepared and has not written the appropriate physical data for the solvents to be used in the extraction lab. The solvent being dichloromethane used to extract caffe
Acetone and water are miscible meaning they are soluble in all proportions. Would it be possible to perform an extraction with these two liquids? Explain your answer.
In a combustion reaction, one molecule of a hydrocarbon produced nine molecules of carbon dioxide and eight molecules of water. How many molecules of oxygen (O2) were consumed?
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps.
An object with a constant pressure heat capacity of 200 j/K is removed from a boiling water bath and allowed to cool to room temperature. calculate the change in entropy in the object, the surroundi
To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions and the reaction chamber was found to expand to 310 cm3.