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An organic compound containing lead was found to contain 21.70 C and 2.7% H. The lead content was found by dissolving 4.6201g of the compound in water and adding sodium sulfate. 3.100 g of lead precipitate was collected. What is the empirical formula of the compound? [assume the compound consists of lead, carbon, hydrogen and oxygen]
Mark the True statement A. In carbon containing compounds, carbon usually forms four bonds, nitrogen usually forms three bonds, oxygen usually forms two bonds, and hydrogen only forms one bond.
Water beads on the surface of a freshly waxed car hood. Use your knowledge of intermolecular forces to explain
Given the following heat capacities, (assume they are constant over the temperature range in consideration here), calcrulate enthalpy for the reaction 2NO + O2 ->2NO2 at 398k.
Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0654 M 18.4 s after the reaction starts and is 0.0112 M 82.9 s after the reaction starts.
Write the Bronsted-Lowry chemical equation describing how HC4H7O2 behaves when add to water
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
acetic acid has one carbon- oxygen bond that is 1.36 A nd another 1.23 A however sodium acetate has two equal carbon- oxygen bonds
A 4.80 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C.
What is the molality of CrCl3 in a solution prepared by dissolving 75.2 g chromium(III) chloride hexahydrate in 250.0 g of water.
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
The following set of reactions can be used to produce nitric acid, HNO3. Calculate the mass of nitric acid produced from the reaction of 15.5 kg of nitrogen gas with excess hydrogen gas. Each reaction in turn has an excess of the second reactant a..
A lab protocol on synthesizing sulfathiazole from p-acetamidobenzenesulfonyl chloride and 2-aminothiazole. It would be appreciated if exact amounts of reagents, solvents, etc (in grams, mmols, mls - etc), could be given.
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