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1. A 31.4mL sample of nitrogen gas was collected over water at 23.7 degrees Celsius as well as a barometric pressure of 706mmHg. Define what mass of nitrogen was collected? Vapor pressure of water at 23.7 degrees Celsius is 22mmHg.
2. Chloroform (CHCl3) became popular as an anesthetic after Queen Victoria delivered her eight child as anesthetized by chloroform in 1853. Explain what is the density in grams per liter of chloroform at 35 degrees Celsius and 850torr?
3. Explain how many liters of H2 are needed to make 327L of NH3 by the reaction: N2 (g) + 3H2 (g) -->2NH3 (g), if the gases are at the same temperature as well as pressure?
The molecular geometries for H2O and SO2 are bent. The H-O-H bond angle in H2O is about 109degrees, whereas the bond angle for O-S-O is about 120degrees, EXplain using lewis diagrams why the molecules have the same molecular geometry but different..
A 0.1276-g sample of a monoprotic acid (molar mass=1.10x10^2) was dissolved in 25.0 mL of water and titrated with .0633 M NaOH. After 10.0mL of base had been added, the pH was determined to be 5.77. What is the Ka for the acid
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide if 2.90 g of the gas is collected when 10.5 g of marble reacts
Calculate its standard heat of combustion in kilojoules. Methyl tert-butyl ether (MTBE), , a gasoline additive used to boost octane ratings, has = -313.6.
write the reaction that occurs when ammonia and acetic acid are mixed. b. Although ammonia and acetic acid are weak electrolytes, a mixture of these two solutions behaves as a strong electrolyte.
a 1.0 ounce piece of chocolate contains 15 rm mg of caffeine and a 6.0 ounce cup of regular coffee contains 105 rm mg
Predict whether zinc and silver react with 1 M sulphuric acid to give out hydrogen or not. Given that the standard potentials of zinc
1. compute the henrys law constant of air if the solubility of air in h2o is approximately 2.1 x 10-3 m at the
the compounds magnesium oxide (MgO) and calcium sulfide (CaS) is 82.1% by mass calcium sulfide . The compound calcium sulfide is 55.6% by mass calcium. Calculate the mass (g) of calcium in the mixture.
consider preparing an electrolytic cell with solid cu amp 0.40 m cuno32 solution in one half cell and solid ag amp 0.60
The side rection most often encountered in diels-alder syntheses is dimerization, in which the diene also acts as a dienophile. For example, butadiene can react with itself to yield 4-vinylcyclohexene . Draw the structures of four possible Diels-a..
What is the percentage of Fe in iron(II) ammonium sulfate hexahydrate, Fe(NH4)2(SO4)2 * 6 H2O
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