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What would you expect to be the general temperature and pressure conditions for an optimum yield of nitruc oxides,NO, by the oxidation of ammonia?4NH3(g) + 5O2(g) ----------> 4NO(g)+6 H2O(g); &De
Gun A is fired straight upward, with the pellet going up and then falling back down, eventually hitting the ground beneath the cliff. Gun B is fired straight downward. In the absence of air resistan
Find (a) the magnitude of the resultant vector A+B+C+D , and (b) its direction as a positive angle relative to due west.
You add 1.00 kg of the antifreeze ethylene glycol (C6H6O3) to your car radiator,which contains 4450 g water. What are the boiling points of the solution if Kf = 0.512.C/m andKb=1.86.C/m?
Fifteen bright spots appear on the screen. (a) Find the maximum possible value for the slit separation in the diffraction grating.
Calculate the vapor pressure lowering when 10.0ml glycerol (C3H8O3) is added to 500 ml waterat 50'C. At this temperature the vapor pressure of pure water is92.5 torr and its density is 0.988 g/ml. T
You measure the velocity of an electron to an accuracy of ±12.3 m/s. What is the minimum uncertainty in its position?
A small satellite is 10,000 km above the center of a planet and orbits it once in 100 min. What is the mass of the planet? (Assume the satellite's mass is much less than the planet's mass.)
In the distant future, an astronaut drops a wrench on an alien world. The wrench falls from rest a distance to 1.22 m to the ground, and it takes .672 seconds to fall. What is the acceleration due t
Bubba drops a small pebble down a well shaft one day to see how deep it is. He notices that it takes the pebble 2.76 seconds to reach the bottom of the well.
How many grams of aluminum can be formed by the passage of370. C through an electrolytic cell containing a molten aluminum salt?
The distance between the centers of two binary stars is R. Star 1 has a mass Mo and star 2 has a mass of 2Mo. In terms of R, how far from the center of star 1 is the point where the two gravitationa
The copper object is then submerged in water so that half its volume is below the water line. Determine the new fundamental frequency.
What force does the lift exert on the hay bale (what is the normal force between the lift and the hay bale)?
A student used 2.05 x 10-3 moles of sodium hydroxide in an acid-base titration to neutralize an acid to the equivalence point. Show the complete ionic equation foraqueous sodium hydroxide ionizin
Billy bob is driving along one day talking on his cell phone instead of paying attention to what he is doing. He drives right off of a 25 foot cliff at 42 mph. How far from horizontally from the ed
A student titrates a 250.00 mL sample of an acidic mine drainage with a 0.1273 M solution of KOH. It takes 50.81 mL of the potassium hydroxide to reach the equivalence point.
Light is emitted from an ordinary lightbulb filament in wave-train bursts about in duration. What is the length in space of such wave trains?
How long does it take for bubba to pass the truck (from bubba's front bumper alongside the truck until his back bumper is alongside the truck)?
Convert each set of measurements to meters and find the mean length for each group. The conversion factors are 1 in = 2.54 cm and 1 cm =0.01 m. Remember that conversion factors are exact and do not
In earlier times,ethyl ether was used as an anesthetic. When five milliliters ofethyl ether (C4H10O), density 0.714 g/mL, is burned in a bombcalorimeter, the temperature rises from 23.5 oC to 39.7 o
Finally, the student turns and walks a distance of 25.1 meters in a direction of 22 degrees south of east in 30.3 seconds. What is the average speed that the student was moving?
A molecule of water is composed of two atoms of hydrogen and one atom of oxygen (H20). If the atomic mass number of hydrogen is 1 and the molecular mass of water is 18, the atomicmass of oxyen must be
Finally, the student turns and walks a distance of 25.1 meters in a direction of 22 degrees south of east in 30.3 seconds. what is the average velocity (direction and magnitude) of the student durin
Calculate the pH of a solution prepared by mixing two solutions:3.00 L of a solution containing 84.0 g of NaF and 1.00 L of a 0.250M HF solution. (Ka of HF = 7.0 x 10-4)