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What lead to the decolonization in Africa. Discuss the challenges that confronted Africa's independence.
at 25 C, a sample of NH3(molar mass= 17g/mol) effuses at a rate of .050 mole per min. under the same conditions, which of the fallowing gases effuses at approximately one-half that rate
A child throws a stone horizontally from the top of a 15 m cliff with a speed of 10 m/s. If the stone weighs 2 N, find its kinetic energy and speed
discuss Cultural, financial , Political and industrial globalization.
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
A vanadium electrode is oxidized electrically. If the mass of the electrode decreases by 114mg during the passage of 650 coulombs, what is the oxidation state of the vanadium product
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.69 rev/s, Which rate of rotation gives the greater speed fo
If 450g of acetone is reacted with 650g of benzaldehyde and it yields 350g of the product what is the percent yield? Show your calculations.
Why was the First World War so destructive of human life? How did soldiers’ experiences in that war differ from those in earlier conflicts? Why?
What is the mass (in grams) of the precipitate when 8.05 g of barium nitrate reacts in solution with excess sodium carbonate
A power line, running above the ground at the top of 8.0 m high poles, carries a current of 90 A. What is the magnitude of the magnetic field produced by this wire at the ground
Explain The pentose phosphate pathway is another possible direction for G-6-P. What are the two major products of the pentose phosphate pathway
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
for a particular redox reaction MnO2 is oxidized to MnO4- and Ag+ is reduced to Ag write a balanced equation
If 842 pounds of Moon samples have been collected from lunar landings, what is the mass expressed in kilograms? (Given: 1 kilogram= 2.20 pounds).
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him, What is the force of friction between the losing player's feet and the grass
Which of the following tests could differentiate between pentanal and 3-pentanone, also what would occur.
Why was this considered deviant? Would it still be considered deviant today? Include specific examples such as Haight-Ashbury and the Summer of Love, Woodstock, and others.
How to improve yield for methyl-m-nitrobenzoate from nitration of methyl benzoate experiment
Carbon Dioxide and water form during combustion of methane. How many grams of water vapor form when 2.39 g of methane react completely with excess oxygen? CH4 (g) + 2 O2 (g) ------> CO2 (g) + 2 H
An 93-g arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 77cm, What is the speed of the arrow as it leaves the bow
All of the following is correct about the Mongols except: The movement antagonized local nobles, and clerics sought to gain favor with them by killing the heretics. Which one of the followin
Classify each of the following compounds as ionic or molecular. If it is ionic, classify it as a Type I or Type II ionic compound. CoCl2, CF4, BaSO4, NO
a 1.5-kg mass attached to an ideal massless spring of spring constant of 20N/M oscillates on a horizontal, determine the total energy of the oscillating system
Calculate how long it would take to cook a traditional three-minute egg on top of Mt. McKinley in Alaska on a day when the atmospheric pressure there is 355 torr.