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Problem- Consider the exothermic combustion of coal. Which of the following could increase the rate of reaction?
(1) using smaller pieces of coal (2) increasing the concentration of oxygen
(3) lowering the temperature (4) both (1) and (2) are correct
(5) choices (1), (2) and (3) are all correct
I need help for above question. Show each steps for the above problem.
Explain what is the energy of the photon that is emitted when the state of an electron changes from n=4 to n=2 in a hydrogen atom
A 1.40 mL sample containing chromium-51 as a tracer was injected into a patient. Z After several hours a 5.50 mL of blood was drawn and its ctivity compared to the injected tracer sample.
Calculate this separation for n=100; also calculate the average radius, the geometric cross section, and the ionization energy. Could a thermal collision with another hydrogen atom ionize this Rydberg atom
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Assume that while extracting material from gallstones you have isolated a compound that you suspect is cholesterol, but you cannot be sure. How would you experimentally prove that the sample that you have isolated is actually cholesterol using mel..
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, H2O2, can be titrated against a solution of potassium permanganate, . The following equation represents ..
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The energy difference of 3.8 kJ/mol between gauche and anti butane corresponds to an equilibrium constant, Keq, of approximately 1.9. Calculate the percentage of each conformer at equilibrium.
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Consider the following reaction. N2(g) + 3H2(g) > 2NH3(g) The initial pressures of the H2 IS 3 atm and the pressure of the N2 IS 2 atm. Which statement is true? N2 is a limiting reagent H2 is a limiting reagent Neither gas is a limiting reagent
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