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What wavelength of light (nm) is required to eject an electron with a speed of 2.0 x 106 m/s from a metal with a threshold energy of 3.4 x 10-18 J?
A modern chealting agent used for this purpose is succimer (C4H6O4S2). Suppose you are trying to determine the appropriate dose for succimer treatment of lead poisoning.
After the removal of the solid the solution was made basic and more H2S was added and a dark precipitate again formed. Treatment of the filtrate with (NH4)2CO3 resulted in a white precipitate. If no further test were made then what conclusions can..
Solid aluminum can be separated from molten AlCl3 by reduction. How many grams of Al(s) would be obtained by passing a current of 14.1 A through molten AlCl3(s) for 2.77 hr.
a compounds analyzes to be 61.7 cl 26.72 p and 12.11 n. 1.2952 g of the compound was dissolved in 15.00 ml of benzene
Write the formula of these reactions or write no reaction if there is none
If 225ml of oxygen gas at STP were needed for an experiment, how many moles of H2O2 would be needed
Identify the species that is oxidized and the species that is reduced in each reaction.Write out two half reaction to show how many electrons are gained or lost by each species.
Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride in grams required to make 4.4 of silver plating.
An oxidation-reduction reaction in which 3 electrons are transferred has a deltaG(standard)=+18.55 kJ at 25 C. What is the value of E(standard)
the value of kp for the reaction 3h2 n2--gt2nh3 is 4.3x10-4 at 648 k. determine the equilibrium partial pressure of
A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volume is 1544 mL.
You could determine Ka for benzoic acid by measuring the pH of a 0.010 M solution of benzoic acid. Why is graphical method (pH vs volume of NaOH added) a better way of determining Ka
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