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A gaseous mixture of O2 and N2 contains 39.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585mmHg?
Perchloric acid with an aqueos solution of ammonia and nitrous acid with lithium hydroxide
A grad student made the news for all the WRONG reasons a few years ago when he synthesized a "nickel hydrazine perchlorate" compound (but didn't give any more detailed information) on a scale 1000 times larger than what his lab advisor told him to..
what is the wavelength ,in nanometers, of light with an energy content of 1979Kj/mol. In what portion of the electromagnetic spectrum in this light
What is the composition of the vapor of a pentane-hexane solution that has a vapor pressure of 411 torr at 25C
An impure sample of potassium hydrogen phthalate, KHP, having a mass of 111.07 g was dissolved in water. This acid sample was neutralized by the addition of 310.0 mL of 0.250 M NaOH
If 25.0 ml of 0.150 M Ba(OH)2 is required to react completely with 45.0 ml HCl solution, what is the molarity of the HCl(aq)
D-xylose residues are present in the greatest amount and are attached by ß (1->4) glycosidic bonds. Draw the structure of a disaccharide consisting of D-xylose
Octane has a density of .692 g/ml at 20 degrees Celsius. how many grams of O2 are required to burn 1.00 gal of C8H18.
how many grams of lead (II) chloride is produced when 13.87 g lead (II) nitrate combines with hydrochloric acid to produce lead (II) chloride and nitric acid?
Calculate the values of q, w, delta U, and delta H for the reversible adiabatic expansion of 1 mole of a monatomic ideal gas from 5.00 m^3
A piece of pure aluminum is placed in contact with a piece of pure copper. At what temperature should diffusion ooccur for the concentration of copper in aluminum to be 600 kg>m
Explain Threshold / NOEL Levels of Chemical Toxins, What is the maximum average daily consumption(g) of such fish that would keep exposure level below the ADI or RfD for the compound?
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