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Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene?
find the percent composition of a compound that contains 1.94g of C, 0.48-g of H and 2.58-g of S in a 5.00-g S sample of the compound
sodium hypiodite is disolved in water to make 1.25L of solution. the solution pH is 11.32. What is the Kb value of the hypoiodite ion?
Covert the EU Nitrate standard of 50ppm to its nitrogen content alone. Is the EU standard more or less stringent than the United States regulatory limit
The IR Spectra of solid benoic acid and liquid acetic acid are shown below. The OH stretch of a carboxylic acid is normally a broad peak from 3500-2500 cm-1. Explain why acetic acid has a very broad intense and prominent peak in this area but benz..
A sample of Chlorine gas occupies a colume of 711 mL at pressure of 251 mmHg. Calculate the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 173 mL in scientific notation
when 6.6 g solid naoh is dissolved in 30.0 g of water in a coffee cup calorimeter the temperature rises from 25.5 to
How many grams of sucrose ,use be added to 593g of water to give a solution with a vapor pressure 0.953 mmHg less that that of pure water at 20*c
A small hot air balloon is filled with 1.02 x 10^6 L of air (d=1.20 g/L). As the air in the balloon is heated, it expands to 1.13 x 10^6 L. What is the density of the heated air in the balloon
Why do we switch the solvent in chromotagraphy column and which solvent should be switched for
How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO3)2 and 2.40 moles of Li3PO4? Reaction: Ca(NO3)2 + Li3PO4 --> LiNO3 + Ca3(PO4)2
A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula
How To Draw a Free Electron Model Energy Level Scheme for Hexatriene, give correct energy assignment and quantum number and include correct spin
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