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Question- Ultraviolet radiation of wavelength 121 nm is used to irradiate a sample of potassium metal. The work function of potassium is 2.25 eV. Calculate the speed of the electrons emitted through the photoelectric effect (x10^6 m s-1).
I am in need of complete solution for the above problem please help- me out to get right solution
At this temperature iron is in the BCC form and will dissolve (interstitial) carbon up to about 0.001 wt%. If the criterion is that the carbon concentration equals 0.0002 wt% carbon at a depth of 100 microns, how long must the exposure be?
Problem- During the hydration and purification of norbornene with sulfuric acid, one of the purification steps is a cold water extraction/wash. Methylene chloride and water are used as the immiscible solvents.
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K. If the H2 is oxidized in a fuel cell with maximum efficiency to drive an electric version
In one experiment, the mass of water is 93.0 grams, the initial temperature of the water is 67.2oC, the mass of liquid nitrogen added to the water is 57.8 grams, and the final temperature of the water, after the liquid nitrogen has vaporized, is 3..
consider the second-order decomposition of nitroysl chloride2noclg rarr 2nog cl2gat 450 k the rate constant is 15.4
Gibbs Free Energy: Spontaneity Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last forever.
Question- A piece of iron (mass = 25.0 g) at 398 K is placed in a Styrofoam coffee cup containing 25.0mL of water at 298 K. Assuming that no heat is lost to the cup or surroundings, what would the final temperature of the water be
Determine how much silver ion(Ag+) is left in solution if you mix 0.10 mole of silver nitrate AgNO3 with 0.20 mole of sodium hydroxide NaOH to make a one litre solution.
Select whether each statement is True of False about the following reaction. The reaction is endothermic in the forward direction. PCl5(g) « PCl3(g) + Cl2(g)
At 30°C, by how much is a reaction's activation energy decreased by the addition of a catalyst if the catalyst triples the reaction rate?
A specific heat of gold is .129J/g deg. Celsius. What is the molar heat capacity of gold
100.0mL of 0.00100M Na2CO3 and 100.0mL of 0.00200M MgCl2 are mixed. Will a precipitate form. Justify your choice mathematically.
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