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Imagine you are touring the United States in 1836. You compose an essay describing what you have seen. Based upon this trip, how would you compare and contrast the economies, societies, and cultures o
In some cases a Br-Br bond can be broken by the absorption of photons of light energy. Br-Br bond energy is 192 kj/mol determine the photon energy and the wavelength (in nanometers) associated with
What is the pH halfway to the equivalence point for the titration of 0.20 M CH3NH2 with 0.20 M HCl? (Kb of CH3NH2 = 4.4 x 10-4)
A charged particle moves through a velocity selector at a constant speed in a straight line, Find the charge-to-mass ratio of the particle
How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
What is mass (in g) of copper can be recovered from 49.9 mL of a 0.628 M solution of copper(I) chloride and excess hydrogen
The World Is Flat, Thomas Friedman argues in favor of what he calls "The Dell Theory of Conflict Prevention." William Duiker is not so sure about the trend toward globalization, saying that it may be
A solution is 0.10 M AgNO3 and 0.10 M Ba(NO3)2. If solid Na2SO4 is added to the solution, what is [Ba2+] when Ag2SO4 begins to precipitate? (Ksp BaSO4 = 1.1 x 10-10; Ag2SO4 = 1.1 x 10-5)
Who was John Muir and what religious changes did he make in the way Americans thought of wild lands? What is the philosophy that John Muir define and now is the philosophy of the National Park service
Thallium and indium form +1 and +3 oxidation states when in compounds. Predict the fomulas of the possible compounds between thallium and oxygen and between indium and chlorine. Name the compounds
Light of wavelength 420 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33, What is the wavelength of the light in the water
In the titration of a solution of the extremely weak acid, HCN (Ka = 6.2 x 10-10), by a solution of sodium hydroxide of equal concentration,
An unstable elementary particle comes in two varieties, one with positive and one with negative electric charge, What is the difference (R+)-(R-) between the two rates, with its error
Two insulated wires, each 2.94 m long, are taped together to form a two-wire unit that is 2.94 m long. One wire carries a current of 8.36 A, What is the current I
What is the theoretical yield (in mol) of carbon monoxide when 2.62 mol oxygen reacts with 2.08 mol of ethanol (CH3CH2OH) to produce carbon monoxide and water
Its an essay about Japanese Music history and how it started off and evovled over the years. Need to talk about traditional music, instuments and modern music. Anything about japanese music would help
a bee that is 3m away from a person produces a buzzing sound that is barely audible (the intensity is the threshold of hearing I0) What is the decible level of 1000 bees
An equilibrium mixture of NO(g), O2(g) and NO2(g) is allowed to expand from 1.0 to 2.0 L at a constant temperature. Given that 2 NO(g) + O2(g) <=> 2 NO2(g) which of the following statements is
How did the cultural and intellectual trends of the interwar years reflect the experiences of World War One and the interwar years themselves?
A square conducting loop has side a and carries clockwise current I as shown in the diagram. calculate the magnitude and direction of the magnetic field at the center of the square
How did trade influence the development of sub-Saharan Africa during the 9th-17th century? What were the long-range and immediate causes of World War One?
How many total moles are produced when 0.69 mol of ethanol (CH3CH2OH) are combusted in oxygen to produce carbon dioxide and water
block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.2 m and then collides with stationary block 2, What is the value of distance d if the collision is elastic
What conclusions can you draw about the impact of World War One on European political institutions and social structures?