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An airplane is pressurized to 650 mmHg, which is the atmospheric pressure at a ski resort at 13000 ft altitude: a) if air is 21% oxygen, what is the partial pressure of oxygen on the plan? b) if partial pressure of oxygen drops below 100 mmHg, passengers become drowsy. if this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped?
An investment company whose stock trades based on supply and demand in the market rather than at net assets value
Which of the following elements are diatomic gases at 25 degrees celsuis and one atm: H, He, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, and Rn?
Estimate the temperature you should dope at (°C) if you must have a concentration of 100 P atoms per 10 million Si atoms at a depth of 10 nm in 5 minutes.
A gas evolved during the fermentation of sugar was collected at 22.5 c and 702 mmhg. After purification it's volume was found to be 25.0 l . How many moles of gas were collected.
the meta and para forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phynelene diamine
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
If the water in a well has 1000.0 mg/L of CaCO3 dissolved in it, How many grams of Na2C2O4 could you mix with 100.0 mL of that water before a precipitate would form
The gas phase dimerization reaction 2 NO2 = N2O4 has an equilibrium constant of Kc = 4.72 at 373 K (when all concentrations are measured in M units).
Wind provides a source of renewable energy that is increasingly being tapped. Modern wind tubines can conbert up to 30% of the kinetic energy of the incoming wind blowing through their blades to electicity.
Given a restriction enzyme that has a concentration of 50 units/ml but your experiment requires that the concentration be reduced to 2.5 units/ml.
A 0.9760-g sample of potassium acid phthalate required 44.00 mL of barium hydroxide solution for titration. How do you calculate the molar concentration of the barium hydroxide.
Arrange the items on the food chain according to increasing mercury levels: microorganisms, people, small fish, and sharks.
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