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Questions:
how many grams of KO2 are needed to produce 885.0 L of O2 at 22.0 degrees Celsius and 1.00 atm
Using what you know about acid/base chemistry, determine the immediate effect that two 325-mg aspirin tablets would have on the pH of the stomach. Assume your stomach is half a liter in volume.
Is second order (in A) with rate constant 0.0006 L mol-1 s-1. At infinite time [A] = 0. How long will it take a solution with [A] = 79.2 M to decompose such that [A] = 17.2 M? Give your answer in seconds.
Take element Z = 57 from the periodic table. Ionize it 56 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
Calculate the oxidation number (charge) of ONLY the atoms which are changing in the following redox equations
Verify the following statements (a) One part per million corresponds to one minute in two years, or a single penny in $10,000.
If all the weight from the cylinder was removed infinitely slowly and isothermally (reversible, isothermal expansion) what is the maximum amount of work that the gas could provide? How much heat would be added to the system to achieve this work
Observe the d-orbitals on a central metal and use the character table to derive their irreducible representations (remember which column to look at). Circle any that are nonbonding for sigma interactions.
Caffeine is basic. Show the reaction of caffeine with aqueous hydrochloric acid to give caffeine hydrochloride. (reaction is at the tertiary amine nitrogen, not the amide ones). Show all mechanism arrows
Would the piece of Oak wood float or sink in water? Can you please explain how you got the answer
What volume of 0.10 M KMnO4 solution would be required to oxidize 20 mL of 0.10 M FeSO4 solution in acidic solution? Fe2+ is oxidized to Fe3+ and one of the reduction products is Mn+2.
What is the pH at the equivalence point of a weak base-strong acid titration if 20.00 mL of NaOCl requires 28.30 mL of 0.50 M HCl? Ka=3.0x10-8 for HOCl.
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