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What is the maximum kinetic energy of an ejected electron if vanadium metal is irradiated with 258-nm light? The threshold wavelength for a vanadium metal surface is 288 nm.
Give your answer accurate to three significant figures. Use exponential notation (e.g. 1.23e-19).
The incomplete pressures of CH4, N2, and O2 in a sample of gas were found to be 100, 450, and 200 mmHg, respectively. Compute the mole fraction of Nitrogen.
a gas sample containing 1.65 mol at 25degc exerts a pressure of 413 torr. some gas is added to the same container and
Assuming the earth is a perfect sphere with a radius of 6371 km and an atmosphere that extends from the surface to an altitude of 20 km determine the number of metric tons of the elements/compounds+
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-)+Fe(2+)---> Fe(3+)+Mn(2+) in acidic solution. What is the ration Fe(2+):MnO4(-) in the balanced equation
when 92.0 grams of nonionic compound were dissolved in 985 grams of water the freezing point of the solution was found
Describe the reaction and mechanism of solvolysis reaction of tert-butyl bromide in ethanol.
a graduated cylinder reads 4 ml of water.then a shell is dropped into it and the water level rises to 12 ml.what is the volume of the shell?
How would the value of molecular weight be affected if all of the liquid is not vaporized. Explain
We add R12 to the tank until the final mass of R12 inside the tank is 80 kg. If the temperature remains constant, what is the volume occupied by the liquid in the final state. How much mass of R12 was added to the tank
how are homogeneous mixtures in solution the same as homogeneous mixtures in suspension.how are homogeneous mixtures in
An aqueous solution containing 16.2g of an unknown molecular (nonelectrolyte) compound in 102.0g of water was found to have a freezing point of -2.0C.
There are three isomeric dichlorocyclopropanes. Their 1H NMR spectra show one signal for isomer 1, two signals for isomer 2, and three signals for isomer
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