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Explain why should the standardized NaOH solution be kept in a stopper bottle? Why should you use a rubber stopper for this?
A 25.0 g piece of aluminum is dropped into a beaker of water. The temperature of the aluminum drops from 94 degrees C to 67 degrees C. Explain what quantity of heat energy did the piece of aluminum give off
A second order reaction is found to have an activation energy of 20 kj/mol at 298K. At what temperature would this reaction need to occur at to proceed twice as fast
The solid is not completely submerged in te water. will this technique error ingrease, decrease, or have no effect on the reported density of the solid
If hydrogen were used as a fuel, it could be burned according to the following reaction: Use average bond energies to calculate for this reaction
If 26.95 mL of a standard 0.1650 M NaOH solution is required to neutralize 37.17 mL of H2SO4, what is the molarity of the acid solution
The activation energy of a certain reaction is 52.9 kJ/mol. How many times faster will the reaction occur at 35 degrees C than at 25 degrees C
A 1.90 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 36.0 percent of the NOCl had dissociated.
the half-life of a certain radioactive element is 1250 years. what percent of the atoms remain after 7500
Volume after mixing is 131mL. Kf=1.86 C/m -- Kb=0.512 C/m Calculate the freezing point and boiling point?
Isopropyl Iodide can be used in acetoacetic esther synthesis in the presence of NaOET to form 4-methyl-2-pentanone. How does this occur? P.S. I tried to use the chem software to diagram this reaction but failed miserably :P
One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the..
how many carbon dioxide in kilograms is produced upon the complete combustion of 18.9 l of propanemany home barbecues
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