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A sample of helium gas has a volume of 8.23 L at 258.8 K and 2.049 atm. How many helium molecules does it contain?
the Van der Waals equation of state to find the critical temp and pressure for a fluid
Calculate the wavelength at which this vibration will be found in the anti-Stokes scattering from a nitrogen laser(337nm).
Calculate the Pickering series wavelength associated with the excited state ni = 8. B)What region of the electromagnetic spectrum does this transition fall in? gamma ,x-ray ,visible ,radio ,microwave ,infrared ,ultraviolet
Calculate pFe2 at each of the following points in the titration of 25.00 mL of 0.02075 M Fe2 by 0.03616 M EDTA at a 6.00 pH:11.50 mL,
Calcium hydroxide, Ca(OH)2, has a solubitlity of 1.85 g/L at 0.0 C. What is the solubility product constant (Ksp) for a saturated solution of Ca(OH)2 at 0.0 C
if a raindrop weighs 65 mg on average and 5.1x10^5 raindrops fall on a lawn every minute what mass in kg of rain falls in 1.5 hours
When 2-methylpropene is treated with sulfuric acid the resulting mixture can be used to convert benzene to tert-butylbenzene
A 53.6 gram sample of an unknown substance contains 11.5 grams of carbon. What is the percent by mass of carbon in the compound?
the product of this reaction ozone is a pollutant in the lower atmosphere. ozone is an eye and lung irritant and also
What is the Cl ? concentration just as Ag2CrO4 begins to precipitate when 2.0 M AgNO3 is slowly added to a solution containing 0.048 M Cl ? and 0.048 M CrO42-
Write the first step in this elimanation reaction, using curved arrows to show electron reorganization. OH- CH3-C-(CH3)2Cl
A sample of 87 mg of an ideal gas a 0.600 bar pressure has its volume doubled and its absolute temperature tripled. Find the final pressure.
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