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If the total 30 mJ of light with a wavelength of 300nm strikes of plate. The work function φ=5.5ev.
a) if only 3.5 μl of light were used instead (still 300nm)how would the experimental result change? Consider both the number and the energy of the electrons
B) if 280 nm wavelenght light were used instead of (still 30mJ) how would the experimental result change consifer both the numbers and the energy of the electrons
Arrange the members of the following set of elements in order of increasing first ionization energies. (Use the drop down lists to indicate your choice, with 1 as the smallest IE and 6 as the largest IE.)
If your front lawn is 15.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1350 new snow flakes every minute, how much snow (in kilograms) accumulates on your lawn per hour?
A sample of gold weighs 1.2 oz. The sample is pounded into a thin rectangular sheet with an area of 400. sq. ft. The density of gold is 19.3 grams per cm3. What is the thickness of the foil in centimeters
What is the rate constant when the rate law is written delta[BrO3-]/delta[t]? Or delta[Br-]/delta[t]?
If all the energy obtained from burning 1.09 pounds of propane is used to heat water, how many kilograms of water can be heated from 23.7 degrees celsius to 48.7 degrees celsius
Consider ATR sampling using a trapezoidal ZnSe crystal. In the mid-infrared region, refractive indices for ZnSe and water are approximately 2.4 and 1.3, respectively. What is the penetration depth (?m) for IR radiation of 1600 cm-1 if it strikes t..
what is the condensed structural formula of
1. when performing a friedel-crafts alkylation reaction not only does one have the problemsnbspof multiple alkylation
Draw molecular structure of the following compounds. Identify the : paraffins, olefins, alkynes, naphthenes,and aromatics.
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
Calculate [H+], pH, [OH-] and pOH in a solution in which lactic acid, HC3H5O3, concentration is 0.250 M and the lactate ion concentration is 0.125 M.
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction: PCl5(g) ?PCl3(g) + Cl2(g)
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