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Optical fibers allow the fast transmission of vast amounts of data. In one type of fiber, the wavelength of transmitted light is 1.3 X 10^3nm. (a) What is the frequency of the light? (b) Fiber optic cable is available in 12 km lengths. How long, will it take for a signal to travel that distance assuming that the speed of light in the cable is the same as in a vacuum?
What is the minimum external voltage must one supply in orger to perform the electrolsis of molten CaCl_2(l)? Suggest a means for supplying this energy.
Describe the mechanism of the preparation of 2-methyl-3-hexanol by reducing an appropriate carbonyl compound.
a sample of gas occupies 12 liters under a pressure of 1.2 atm. what would its volume if the pressure were increased to 2.4 atm? assume the the temperature of the gas does not change.
Calculate the molarity and the molality of an NH3 solution made up of 36.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
A reaction 3A2+ + 2B --> 3A + 2B3+ is used to make a battery. The standard Gibbs free energy change for the given reaction is -690 kJ. What is the standard potential (E ) for the battery.
What is the virial pressure of 0.693 moles of O2S gas at 350K in a 1000 cm3 container, given B = -7 cm3mol1-? atm (Report to 2 significant figures.)
Two sides of a triangle have lengths 7 m and 8 m. The angle between them is increasing at a rate of 0.06 rad/s. Find the rate at which the area of the triangle is increasing when the angle between the sides of fixed length is 60°.
Calculating Internal Energy Change, The heat capacity of a bomb calorimeter is 87.5kJ K-1 (this value is for the total heat capacity, including that of the water jacket around the reaction chamber)
what is the boiling-point change for a solution containing 0.360 mol of naphthalene (a nonvolatile, nonionizing compound) in 256.0 g of liquid benzene? (Kb=2.53 celsius/m for benzene).
Draw the major product that is formed when 2-butyne is treated with an excess of hydrogen gas and a platinum catalyst.
Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O. What is the empirical formula for ephedrine
The vapor pressure of a solution containing 53.6 g glycerin (C3H8O3) in 133.7 g ethanol (C2H5OH) is 113 torr at 400C. Calculate the vapor pressure of pure ethanol at 400C
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