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In the average adult male, the residual volume (RV) of the lungs, the volume of air remaining after exhalation, is 1200 mL.
a) How many moles of air are present in the RV at 1.0 atm and 37oC? b) How many molecules of gas are present under these conditions?
Calculate the number of moles of O2 required to react with phosphorus to produce 5.50 g of P4O6. (Molecular mass P4O6 = 219.9 g/mol.)
A second worker approaches to within 5 meters behind a shield that attenuates 60% and remains there for 20.0 minutes. What is the ration between the absorbed doses for the two workers
Calculate the cell potential for the following reaction as written at 53C, given that [Zn2+]= .841M and [Fe2+]= .0160M. Standard reduction potentials are Zn(s)= -.76, Fe2+(aq)= +.771, Zn2+(aq)= -.76, Fe(s)= -.04
Calculate How many palladium atoms will have to be laid side by side to span a distance of 4.28 mm if The radius of a palladium atom is 137 pm.?
What is the maximum concentration of fe3+ can a buffer solution that is .10M CH3COOH and .10M CH3COONa hold without forming any precipitate
Total pressure in kPa 10 seconds after initiation of the reaction if initially there was 88.3kPa of pure N 2 O 5 vapor Enter the total pressure in kPa 10 minutes after initiation of the reaction.
The reagents available other than DI water are 3.0 M solutions of any acid or base that you may need. How would you go about preparing this buffer
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
Illustrate (draw) the thermodynamic cycles for the acid dissociation of both HCl and HF. Classify each cycle as exergonic or endergonic. Do your calculated values agree with the observed strengths of each acid in water?
determine the rate law and rate constant for the gas-phase reaction of nitrogen monoxide and chlorine.
The densities of Zn, Cr and Fe are 7.89, 7.20, 7.86 g/cm3 respectively. When a 96.7 gram sample of an unkown metal is placed in a graduated cylinder containing 20.0 mL water, the water level rises to 32.3 mL. What is this metal?
Codeine, C18H21NO3, a commonly prescribed painkiller, is a weak base. A saturated aqueous solution contains 1.00 g codeine in 120 mL of solution and has a pH = 9.8. What is the Kb of codeine?
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