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Problem- A 2.52 g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.23 g of CO2 and 1.01 g of H2O. Another sample of the same compound, of mass 4.14 g, yielded 2.11 g of SO3. A third sample, of mass 5.66 g, yielded 2.27 g of HNO3. Calculate the empirical formula of the compound.
Illustrate structures to prove your interpretation.
Nitromethane will absorb 240nm light. Assuming that each nitromethane molecule absorbs 1 photon, how many molecules would it take to absorb 1 kJ of light at 240nm
A sample of 35 millimole of Krypton gas expands reversibly and isothermally at 373K from 5.25 cubic centimeters to 6.29 cubic centimeters. The internal energy, U, increases by 41.75 J.
Question 1) Write equations for the following separations. Indicate any conditions required for the reactions to occur, such as pH5. Part 1) Group III cations from Groupe IV cations
the henrys law constant for co2 gas in h2o 0.031 moll-atm at the temperature of 25 degree celsius. compute the
Describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas, CH4 is burned in the presence of excess oxygen, O2. If 100g of Butane are reacted with unlimited amounts of oxygen
Give the formula of a product derived from the first-named substance that may be formed in the following reactions. Note, in the example that any lower oxidation state compound is possible
What mass of NaOH could this buffer neutralize before the pH rises above 4?
Make a buffer solution with the following specifications: pH=5.2, Volume=3L, total concentration of major species = 1M. a) Name the components.
A very large lake at 20 degrees C absorbs 1 milion J of energy in a 5 minute period without raising its temperature significantly. The entropy change for the lake is in J/K
How would the changing the concentration of 2-chloro-2-methylpropane affect the rate of the reaction of 2-chloro-2-methylpropane with ethanol and silver nitrate
What information is gained from the UV-VIS data. Compound does not contain a conjugated system.
a freezer is used to freeze 3.0 l of water completely into ice. the water and the freezer remain at a constant
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