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An organic compound contains C, H, N, and O. Combustion of 0.1023g of the compound in excess oxygen yielded 0.2766g of CO2 and 0.0991g of H2O. A sample of 0.4831g of the compound was analyzed for N by the Dumas method. At STP, 27.6mL of dry N2 was obtained. In a third experiment, the density of the compound as a gas was found to be 4.02g/L at 127 degrees C and 256 torr. What are the empirical and molecular formulas of the compound?
Which of the following would be the best procedure for extracting acetaldehyde from an aqueous layer to the organic layer? a. Extracting the aqueous layer one time with 200 mL of the organic solvent.
When atomic absorption spectrophotometer had been allowed to adequately equilibrate, a blank determination of absorbance gave the following results.
Consider the following reaction: CO + 2H2= CH3OH, kp= 2.26 x 10^2 at 25C . Calculate delta G for the reaction at 25C under each of the following conditions.
A 530. g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K
How many grams of methane [CH4(g)] must be combusted to heat 1.00 kg of water from 25.0°C to 90.0°C, assuming H2O(l) as a product and 100% efficiency in heat transfer?
How many moles of N2 are produced by the decomposition of 1.80 mol of NaN3?
Calculate the mass percent of a solution that is prepared by adding 70.9g of NaOH to 492g of H20 ... I read that the way to calculate this is Solute/solution x 100%
Calculate the pH of each of the following solutions. a. 2.1x10^-4 M Ba(oH02 b. 7.9x10^-4 M HNO3
If a 180 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.51.0 , what is the average thickness of the sheet in meters?
a 1.30 gram sample of dry ice is added to a 755ml flask containing nitrogen gas at a temperature of 25.0 degrees
what is the ph at the half stoichiometric point if you are doing a titration with 20.0 ml of 0.200 m trimethylamine and
A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C.
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