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When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the "bends". Using the information provided below, determine the moles of N2 and O2 dissolved in 7.5 L of blood at 298 K at a depth of 100.0 feet below the surface of the water and at the surface of the ocean. If the diver were to suddenly return to the surface, how many moles of N2 and O2 would "undissolve" from the blood (assume no loss of gas molecules from the system)? What volume would this amount of N2 and O2 occupy at the surface of the ocean? What would happen to a human if that volume of N2 and O2 were not expelled through the lungs? Based on your answers, explain why returning to the surface of the ocean after a deep dive is so important, and what the "bends" is. (Henry's Law constants at 25C K(O2) = 4.40109 Pa, K(N2) = 8.68109 Pa.)
A cobalt compound has an observed magnetic moment of 5.2 B.M. What can you deduce about the compound?
The concentration of oxygen, O2, dissolved in a sample of seawater is 6.22 ppm by mass (concentration 1 ppm - 1 part per million - means
Illustrate the resonance structure of the most stable carbocation intermediate possible that results from step 2 of an electrophilicaromatic substitution reaction when tert-butylbenzeneencounters bromine in the presence of iron(III) bromide.
Calculate the zero-point energy of a harmonic oscillator consisting of a rigid CO molecule adsorbed to a metal surface by a bond of force
The pH at the first stoichiometric point was 5.19 and at the second stoichiometric point was 8.00. Calculate the three Ka values for the acid.
If the average human body discharges 925.0g CO2 per day, how many moles of NaOH are needed each day for each person in the spacecraft
a) Draw the product of the reaction of propanal with lithium aluminum hydride, followed by water. b) Draw the product of the reaction of propanal with methylmagnesium iodide, followed by dilute acid
Calculate the molar concentration of ferrocyanide in a solution of 0.031 M ZnSO4 saturated with Zn2Fe(CN)6. ZnSO4 will be completely dissociated into Zn2+ and SO42-
The burning acetic acid from the previous question is used to heat 1.4 L of water at 22.7°C. Assume all the heat produced in the last question is absorbed by the water => 240kJ. What would be the final temperature of the water?
Enter the correct expression for the reaction rate corresponding to each of the following mechanisms:
Problem- The pKa of p-nitrobenzoic acid, (whose structure is shown on the right) is 9.1. By performing the correct calculations determine the predominant form (either p-nitrobenzoic acid or its conjugate base) at the following indicated pH values...
A block of dry ice of dimensions 25 cm x 25 cm x 25 cm is left to sublime in a closed chamber of dimensions 4.00 m x 5.00 m x 3.00 m. The partial pressure of carbon dioxide in this chamber at 25 C will be
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