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A 81 kg injured astronaut is sitting in a modern version of dumb waiter (a hand operated elevator 19 kg system) that is being pulled up with a force of 200.0 N. Fortunately, this elevator ride is taking place on the moon and actually accelerates. How long will it take the injured astronaut and elevator system to move from the lunar surface 2.5 m up into the lunar landing module? The moon has a mass of 7.36 x 1022 kg and a radius of 1 738 km.
what is the velocity of a hydrogen molecule after absorbing a photon @ 58.4 nm? what is the translational energy of the molecule in J mol-1
when answering include an explanation balanced chemical equations andor calculations where appropriate.what volume of
a truck driver used sand to soak up a 1 g spill of lindanec6h6cl6. he placed tehcontaminate soil in an open drum which
The first order reaction SO2CL2 yields SO2+ Cl2 is 10% complete in 80 min. How long would it take for the reaction to be 95% complete?
If 50.0mL of NaOH solution is needed to react completely with 0.47-g KHP, Define what is the molarity of the NaOH solution
What are the major products of reaction of each of the following with (i) propanal and (ii) propanone
Suppose a buffer solution is made from formic and (HCHO2) and sodium formate (NaCHO2). What is the net ionic equation for the reaction that occurs when a small amount of hydrochloric acid is added to the buffer?
What is the predicted number of 13C NMR peaks for methylcyclopentane and 1,2-Dimethylbenzene respectively
Cobalt Chloride in varying concentrations Spectrophotometer set to a Wavelength = 510 nm % Transmission = experiment #1 = 31.62, experiment #2 = 89.13 and experiment #3 = 98.86
The electron in a hydrogen atom moves from level n=4 to level n=6. Is a photon emitted or absorbed?
Formic acid, HF or has a Ka value equal to about 1.8*10~-4. A student is inquired to prepare a buffer having a pH of 3.4 from a solution of formic acid as well as a solution of sodium formate having the same molarity. Explain how many milliliters ..
If a propanoic acid/propanoate buffer is .020M in propanoic acid and has a pH of 4.63, what is the molar concentration of the propanoate ion. The pKa of propanoic acid is 4.89.
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