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If we assume that the atmosphere of the earth is an ideal gas mixture, then each component is described by a separate barometric equation. This model predicts that the concentrations of heavier molecules, and therefore their partial pressures, decreases faster than for lighter molecules as the altitude increases. Assume the ratio of partial pressure of nitrogen to oxygen is 4 at the surface of the earth, corresponding to 80% nitrogen by moles, and assume the temperature throughout the column is 25°C. Calculate the value of PN2/PO2 at the altitude of 10 km.
In the Ritalin Synthesis, why is p-PhLi (phenyl lithium) used instead of cuprate? What does cuprate do? And why doesn't the alkyllithium add twice
Determine which monomer will have the higher degree of polymerization (DP) and by how much?
the density of thiophene, C4H4S is 1.065 g/mL. A solution is made by dissolving 15.0 g of thiphene in 250.0 mL of toluene. Calculate the Molarity
If the height of the mercury column in the leveling bulb is 30mm greater than that in the gas buret and the atmospheric pressure is 670 mm, what is the pressure on the gas trapped in the buret?
If a non-cyclic alkane shows a molecular ion peak at m/z 2.40 × 102, what is the chemical formula
Find the pH of a solution prepared by dissolving all of the following compounds in one beaker and diluting to a volume of 1.00 L: 0.180 moles acetic acid (pKa=4.75), 0.180 mole sodium acetate
Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: The maximum amount of SF6 that can be produced from the reaction of 3.5 g of sulfur with 4.5 g of fluorine is
Use the standard normal distribution in Table B.1 to determine the rain depth that would have a recurrence interval of 100 years. Use the same table to estimate the recurrence interval of the 1988 annual rain of 99 inches.
n2go2glt-gt2nog kc 1.7x10-3calculate the equilibrium concentrations if the initial concentrations are 2.31 m n2 and
Assuming complete dissociation and ideal behavior, what would be the boiling point of an aqueous solution of MgCl2 that is 8.0% MgCl2 by mass? For H2O
Draw the acylation mechanism including all resonance forms of an electrophile aromatic substitution reaction if the carbon identified with an asterisk(*)
the instruction booklet for your pressure cooker indicates that its highest setting is 12.5 . you know that standard
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