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Alkenes, choose which statement best dis cribe alkenes from the followings. (a) are relatively polar cpmpound (b) have lower boiling points than alcohols of similar molecular weight. (c) are reasonably soluble in water. (d) both A and B (e) none of the above
The activation energy of the orginal pathway is 106 KJ/mol. What is the activation energy of the new pathway, all other factors being equal?
A nugget of pure gold of 4.80 grams is absorbed 284 Joules of heat. if the initial temperature was twenty eight degree Celsius then what was the final temperature of the Au? The specific heat of gold = 0.129 J/(g·°C)?
50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution.What is the molarity of the Ca(OH)2 solution?
By titration, 23.4 mL of aqueous H2SO4 neutralized 24.8 mL of 0.0495 M LiOH solution. What was the molarity of the aqueous acid solution?
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
Given that Ea for a certain biological reaction is 48kJ/mol and that the rate constant is 2.5 x 10^-2 s-1 at 15 degrees celsius
A photomultiplier tube detects photons by amplifying the current generated by the photoelectric effect. Which metal, lithium, calcium, aluminum or gold would you choose if you were trying to make a photomultiplier tube sensitive to the largest por..
An element has ccp packing with a face-centered cubic unit cell. Its density is 11.4 g/mL and the unit cell volume is 1.21 x 10-25 L. Calculate the molar mass (g/mol) of the element to three significant figures.
Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.
110 mL of H_2O is initially at room temperature (22.0 degrees C). A chilled steel rod at 2.0 degrees C is placed in the water. If the final temperature of the system is 21.0 degrees C.
A sample of CuSO4+5H2O and an inert material was dried to constant mass by heating in a crucible. From the data below, what is the calculated percent CuSO4+5H2O in the Sample?
What is the boiling point of a solution made using 773 g of sucrose, C12H22O11, in 0.275 kg of water,H2O?
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