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If a temperature increase from 11.0degree C to 20.0degrees C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction?
Decomposition of nitric acid NO to N2 and O2 is second order with a rate constant of 0.0796 M-1 s-1 at 737 degrees C and 0.0815 M-1 s-1 at 947 degrees C. Calculate the activation energy.
A photomultiplier is being used to detect 770 nm infrared photons from the excitation of potassium. These photons impinge on a 2 cm square cesium metal surface inside the photomultipler, there is enough energy to release electrons from this metal...
The heat of vaporization of liquid nitrogen is determined by measuring the change in temperature of a known sample of warm water when liquid nitrogen is added.
The temperature of the calorimeter increases from 24.56 *C to 32.01 *C. What is the heat of combustion per gram of quinone and per mole of quinone?
Common oxidation states of mercury are 1 and 2. In the 1 oxidation state, mercury forms a diatomic cation. In the 2 oxidation state, mercury is a typical monatomic cation.
Ammonia,NH3 ; ammonium nitrate,NH4NO3 ; and ammonium hydrogen phosphate (NH4)2HPO4, , are all common fertilizers. Rank the compounds in order from largest mass percent of nitrogen to smallest mass percent of nitrogen.
How many milliliters of .02 M HCl are used to completely neutralize 20.0mL of .01 M NaOH solution?
Why, in a primitive cubic cell, do anions sit on the lattice points while the cation fills the lattice hole in the center a. Because it is favorable for anions to be as close to one another as possible.
If 0.00936 mol neon gas at a particular temperature and pressure occupies a volume of 210. mL, what volume would 0.00793 mol neon occupy under the same conditions? What mass of neon gas is required to fill a 4.44-L container to a pressure of 1.30 a..
A 93 gram solution of silver nitrate contains 16 grams of AgNO3. What is the percent by mass of silver nitrate in this solution?
The aspirin componet weighs only 250mg. What is the w/w% aspirin inthe time release tablet?
Why would it be more appropriate to put the elements La and Ac in the bottom two periods and put Lu and Lr in the transition metals? Why don't we see the use of any sublevels higher than the f sublevel?
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