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The solubility of oxygen in lakes high in the Rocky Mountains is affected by the altitude. If the solubility of O2 from the air is 2.67 x 10-4 M at sea level and 25°C, what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
The distance between layers in a crystal is 323 pm. X rays are diffracted from these layers at an angle of 13.1°. Assuming that n = 3, calculate the wavelength of the X rays in nm.
Calculate the number of moles of solute present in each of the following solutions: a)245 mL of 1.50 M HNO3 b) 50.0 mg of an aqueous solution tha tis 1.25 m NaCl c) 75.0 g of an aqueous solution that is 1.50% sucrose by mass
1. H2O2(aq) acting as an oxidizing agent in acidic solution. Write the balanced half reaction?
Sugar (82.00 grams; molar mass 342.3 g/mol) was dissolved in water. The freezing point of the solution was determined to be -3.60 deg C. How many grams of water were used to make the solution?
b) Determine the hybrid state of each C. c) Draw the molecule geometrically correctly showing its ?- and ?-bonds and the atomic orbitals used to form each bond.
if 5.00 g of each NH3, O2, and CH4 are reacted, what mass of HCN will be produced, assuming 100% yield
If 435 grams of water at 23 celcius abssorbs 281 kJ of heat froma mountain climber's stove at an elevation where the boiling point of water is 87 celcius
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
Calculate the quantity of NH3 is produced upon reaction of 4.0 moles of water and 65.0 g of CaCN2.
What sequence of steps represents the best synthesis of 4-heptanol (CH3CH2CH2)2CHOH?
The electron transport chain complexes that have higher electron affinities steal electrons from those with lower electron affinities.
Five standar solutions of HBr are prepared by serials dilutions in which at each stage 10.00 mL are diluted to 160.00 mL. Given that the concentration of the most dilute solution
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