Chemistry, 31.03.2021 20:20 CoolDudeTrist
What evidence is there for plate tectonics?
A. Topographic maps that show elevation.
B. Evidence from drilling into the Earth.
C. Satellite images that show the outlines of the plates.
D. The geologic events that occur at plate boundaries such as earthquakes and volcanic eruptions.
2
Answers: 3
Chemistry, 21.06.2019 19:00
Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?
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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(> h3o^+(aq)+ch3coo^-(aq)
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What evidence is there for plate tectonics?
A. Topographic maps that show elevation.
B. Evide...
B. Evide...
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