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A proton in a magnetic field has two spin states, one aligned with B and the other anti-aligned. The energies of these spin states are E down=hyB/2 and E up=-hyB/2, where y=26.8*10^7 (Telsa sec)-1.Explain what are the probabilities p up and p down of observing the proton in it's up and down states?
hydrogen and nitrogen have different molecular weights, so mass fractions will be different than mole fractions.
What will the pH of the solution be when 0.1316 L of 2.1 M NaOH are added to the 421 mL of 0.501 M carbonic acid? How many mL of the 2.1 M NaOH are needed to raise the pH of the carbonic acid solution to a pH of 6.019?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.434 grams of iron and 12.2 mL of 0.52M copper(II) sulfate react to form as much product as possible.
The concentration of KBr in a solution prepared by dissolving 2.13 g of KBr in 897 g of water is moral
1. how many mls of 0.560m nicl2 fw129.606 solution are required to react with 15.00 ml of 0.808m agc2h3o2 fw166.912
A compound contains only carbon, hydrogen, and oxygen. Combustion of 51.34 g of the compound yields 75.26 g of CO2 and 30.81 g of H2O. The molar mass of the compound is 90.078 g/mol.
Write a chemical equation for Ca(OH)_2 (aq) showing how it is an acid or a base according to the Arrhenius definition.
What would be an appropriate reaction mechanism for these two reactions? Including electron transfer arrows.
Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of each of the following aqueous solutions.
What alkene (including cis and trans isomers) would be produced by the dehydration of the following alcohols? Where possible, predict the relative amounts of each product according to Zaitsev's rule.
The hydrogen carbonate ion can act as both an acid and a base. Write out two equations which demonstrate this and calculate (or look up) the equilibrium constants for both expressions
A 25.00mL portion of 0.00923M NaOH (MM 40.00g/mol) was introduced into the solution of H2SO4 (MM 98.08g/mol), then the excess was back titrated with 13.33mL of 0.01007M HCl (MM 36.46g/mol). Calculate the parts per million of sulfur in the sample.
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