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A heliox deep-sea diving mixture contains 2.0 {\rm g} of oxygen to every 98.0 {\rm g} of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 7.9 {\rm atm}?
Show that using many small volumes of organic solvent in an extraction from an aqueous phase is more effective than using fewer, larger volumes
The saturation value of DO is 8.5 mg/L. The deoxygenation coefficient (kd) is 0.61/d, and the reaeration coefficient (kr) is 0.76/d. Assume complete and instantaneous mixing of the sewage and river. What is the minimum DO downstream
A sample of an oxide of iron weighing 2.40g was heated in a stream of hydrogen until it was completely converted to the metal,
A copper wire (density = 8.96 g/cm3) has a diameter of 0.18 mm. If a sample of this copper wire has a mass of 33 g, how long is the wire?
The length and width of the settling tanks (two rectangular units are desired with a length to width ratio of 3:1). Assume the average depth of the tank is 4m.
Calculate the radiation dosage (in grays) for an 85-kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta particle has an energy of 1.7× 10-13 J.
If the copper is drawn into wire whose diameter is 7.50 , how many feet of copper can be obtained from the ingot? The density of copper is 8.94
A solution is composed of 1.00 mol cyclohexane (P cy=97.6 torr) and 2.20 acetone (P ac=229.5 torr). What is the total vapor pressure above this solution
Alzarin yellow has a pH range of 10.1-12.1. What is its Ka. It is yellow at pH 10 ANd red at pH 12. What is the color of a solution with a pH 10.9 that has a few drops of alzarin yellow
suppose solute a has a distribution coefficient of 1.0 between water and diethyl ether. demonstrate that if 100 ml of a
Calculate the pH of a 25 mL distilled water sample after the addition of 1mL, 2mL, 3mL, 4mL
What type of radioactive decay would be expected for the unstable nuclide
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