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An attempt at synthesizing a certain optically active compound resulted in the mixture of its enantiomers. The mixture had an observed specific rotation of +15.3 degrees. If it is known that the specific rotation of the R enantiomer is -30.8 degree, determine the percentage of each isomer in the mixture.
Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 29% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
If CO2 is not removed by boiling after the addition of HCL, how will this affect the determination of moles of base per gram of antacid tablet?
a 10.0l container of helium gas with a presure of 250mmhg at 0 degrees celsius is heated to give a pressure of
If 100.0J of energy are added to 25.0g of water at 50 degrees celcius,what will the final temperature of the water be?
on aug. 6th1945 the united states bombedthe japanese city of hiroshima with a 235uranium based bomb killingsome 140000
specific brand of gourmet chocolate candy contains 7.00 rm g of dietary fat in each 22.7-rm g piece. How many kilograms of dietary fat are in a box containing 4.00 lb of candy?
The effective nuclear charge, Zeff, for a valence electron can be approximated using the "core charge" of the atom, that is, the total charge of the nucleus and the inner (non-valence) electrons.
An empty 10L flask at 1000 C is filled with 4.6 g of NO2 (g), and allowd to come to equilibrium according to the above reaction. Kc = 4.72. what will the total pressure in the flask be once equilibrium is reached?
A compound containing only carbon, hydrogen and oxygen was analyzed by combustion analysis. Combustion of a 10.68g sample of the compound in excess oxygen gives 16.01g CO2 and 4.37g H2O.
How many moles of Cr(OH)3 will dissolve in 1.00 L of a solution with a pH of 5.13. (Assume the pH does not change as the Cr(OH)3 is placed in the water.) (Ksp for Cr(OH)3 is 6.7 x 10-31)
A compound contains 10.13% C, and 89.87% Cl (by mass). Determine both the empirical formula and the molecular formula of the compound given that the molar mass is 236g/mol
Calculate the volume change upon mixing sufficient ethanol with 8.85mol of water to give this concentration. The densities of water
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