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Explain why is alcohol added to the initial mixture in the preparation of soap as well as what happens to it at the end of the reaction?
a gaseous mixture of o2 and kr has a density of 1.140 gl at 415 torr and 300. k. what is the mole percent o2 in the
the heat of neutralization for this acid-base reaction is measured by using nbspa coffee cup calorimeternbsp the
Determine the concentration of the HCL solution from the data for the standardization of the HCl with the Na2CO3 Na2CO3 had 0.0826 grams in 25ml of water Initial volume of HCl
Determine the minimum excitation energy of an electron constrained to rotate in a circle of radius equal to the Bohr radius (the value of Bohr predicts for the electron-hydrogen distance in the n=1 state) around a fixed point.
A mixture of 0.152 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessal at 500K, producing a mixture of Co and CO2. The total pressure is 0.6879 atm. What is the partial pressure of CO?
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reactio..
1. how many times would a mole of timbits placed end to end reach from here to mars and back. distance from earth to
The skeletal structure of one molecule is included to indicate the proper format; modify the X\'s on the given structure to create the first stereoisomer.
how could one be endothermic (positive delta H- NaNO3 dissolves in water) and one be exothermic (negative delta H- NaCH3COO dissolves in water)? Is there more to consider than just the dissolving process?
positron cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
how whould you prepare a liter of carbonate buffer at a ph of 10.10 you are provided with carbonic acid sodium hydrogen
Determine the molarity of a solution that is formed by dissolving 21.0 g of CaF2 in a flask and adding water to make 446.2 mL of solution
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