Chemistry, 25.11.2019 13:31, lucypackham9

Is a compound considered a pure substance? why or why not?

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Chemistry, 21.06.2019 21:30, alexandroperez13

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

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Chemistry, 22.06.2019 05:00, Ashleyvasquez2261

Type the letter that represents the correct location for each particle type below.

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Chemistry, 22.06.2019 07:30, gwenparks

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

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Chemistry, 22.06.2019 12:30, nekathadon

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms