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Suppose that ammonia decomposes at 600 K to establish the equilibrium NH3(g) 1?2 N2(g) + 3/2 H2(g) for which K =0.395. You have a box of volume 1.00 liter into which you inject 2.65 g of NH3 at 600
How does nuclear magnetic resonance imaging allow us to see inside human bodies? In what other ways do you think this technology could be used?
The structure of the human genome was elucidated in 2000. Many scientists and business professionals describe the achievement as a turning point.
Gasoline is composed of hydrocarbons. Which additive, ethanol or MTBE, is more compatible (similar) with gasoline? Why?
Baseball reporters say that long fly balls that would have carried for home runs in July "die" in the cool air of October and are caught. The idea behind this observation is that a baseball carries
Research recently reported the first optical atomic trap. In this device, beams of laser light replace the physical walls of conventional containers. T
Using a ground-based telescope and a spectrometer, it has been found that sodium vapor is a major component of the thin atmosphere of Mercury.
Sodium hydroxide can be used as a standarized basic solution. Could another base such as potassium hydroxide KOH be used instead? What would the consequences be?
Why can K2CO3 convert acetaminophen to phenacet in, when K2CO3 is a weak base? Williamson ether synthesis for aliphatic molecules usually requires a strong base, such as sodium ethoxide.
Given K = 1.03 X 10 -3 for H2S(g) H2(g) +S2(g) at 750 degrees Celsius. How many moles of S2 would you have to have at equilibrium in a 3.68 liter box in which there are 1.63 moles of H2S and 0.864
A galvanic cell is formed by connecting an iron (III)/ iron metal electrode to a zinc (II)/ zinc metal electrode through a suitable salt bridge. The cell exhibits a potential of 0.75 V at 25?C.
The NO molecule has a double degenerate electronic ground state and a double degenerate excited state at 121.1 cm- 1. Calculate and plot the electronic contribution to the molar heat capacity of th
Why does it take significantly stronger magnetic and electrical field strengths to move the beams of alpha particles compared with the beams of electrons (beta particles)?
You take stoichiometric amounts of 2-heptene, C7H14, and oxygen in a sealed 1.500 L flask and allow them to react. The reaction goes to completion.
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr.
At -13.0 °C (a common temperature for household freezers), what is the maximum mass of sucralose (C12H19Cl3O8) you can add to 2.50 kg of pure water and still have the solution freeze?
An equilibrium mixture of PCl5(g), PCl3(g), and Cl2(g) has partial pressures of 217.0 Torr, 13.2 Torr, and 13.2 Torr, respectively. A quantity of Cl2(g) is injected into the mixture, and the total p
A container has a mass of 78.91 grams when empty and 92.44 g when filled with water. The density of water is 1.000 g/cm3. Calculate the volume of the container.
Calculate the pressure and composition of air 100 miles above the surface of the earth assuming that the atmosphere has a temperature of 0 celsius independent of altitude.
If you know that each copper atom (radius = 128 pm) has a mass of 1.055 x 10^-22, how many atoms are there in this cube? What fraction of the cube is filled with atoms? Why is there "empty" space in
A cup of brewed coffee is made with 9.0 grams of ground coffee beans. If a student drinks four cups of gourmet coffee a day, how much does the student spend on a year's supply of gourmet coffee tha
Hard water often contains dissolved and ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solutio
How many miles could you drive for $3.90 if the gas mileage of your car is 14.0 km/liter of gasoline and the price of gasoline is $0.96/gal?
Lightning from thunderstorms strike the Earth 100 times each second. 2400 deaths have been caused by lightning strikes over the past 25 years. How many strikes occur before a death occurs? Please ex