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A 2.50 g sample of white solid was vaporized in a 345 mL vessel. If the vapor has a pressure of 985 mmHg at 180°C, what is the molecular weight of the solid?
Compute the vapor pressure at the temperature of 25 degree Celsius of H 2 O above a solution formed by mixing 100.
At a certain temperature the rate of effusion of helium is twice the rate of effusion of a gaseous X.X is a binary combination of carbon and hydrgen.
What is the compounds molar mass if the density of a gaseous compound of phosphorous is 0.943g/L at 474K when its pressure is 728 torr.?
Using a sample that was dissolved in CH 2 Cl 2 , mixed alumina, evaporated the CH 2 C l2 , loaded and began to run his column, starting with C 6 H 14
Explain the three main types of intermolecular forces including dispersion forces, intermolecular forces, dipole-dipole force explain what they are also provide an example of each intermolecular force where it occurs.
A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
Calculate the approximate SO 2 mass emission in lb/day.
What is the fundamental difference between a voltaic cell and an electrolytic cell. Can a voltaic cell in which both half-reactions are the same generate a current.
What will be the likely effect of clearing forests and converting them to grasslands and crops on (a) the earth's reflectivity (albedo) and (b) the earth's average surface temperature?
Add the angular wave function for a 2s electron of Carbon to that of a 2py electron of the same carbon atom. Subtract one from the other. In what direction do the functions point? What orbitals are "left" unused on the C atom?
NH3(Ammonia ) is widely used in many household cleaners and as a fertilizer. Calculate How much ammonia (in units of mol) is produced when 7.8 mol of H gas react with an excess of N gas.
Determine the molarity of a solution of sodium hydroxide (NaOH) if 27.9 mL of this solution combines exactly with 22.30 mL of 0.253 M
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