Chemistry, 31.07.2019 07:00 lilwon9933
How many photons does a 3.2 mw helium-neon laser (λ = 633 nm) emit in 1 second? how many photons does a 3.2 helium-neon laser ( = 633 ) emit in 1 second? 7.6×1018 2.5×1018 5.1×1016 1.0×1016?
Answers: 1
Chemistry, 23.06.2019 00:00
How is the way a mixture is combined different from how a compound is combined?
Answers: 3
Chemistry, 23.06.2019 07:00
Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.
Answers: 2
Chemistry, 23.06.2019 10:10
Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10-3 m and k for the dissociation is 1.86x10-5. ch3cooh(aq)+h2o(l)+> h3o+(aq)+ch3coo-(aq) show me how to get the answer.
Answers: 3
How many photons does a 3.2 mw helium-neon laser (λ = 633 nm) emit in 1 second? how many photons do...
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