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A 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 3.87 g of CO 2 and 0.792 g of H 2 O as the only carbon and hydrogen containing products respectively.
Another sample of the same compound, of mass 4.14 g,yielded 2.31 g of SO 3 as the only sulfur containing product.
A third sample, of mass 5.66 g was burned under different conditions to yield 2.49 g of HNO 3 as the only nitrogen containing product. Calculate the empirical formula of the compound.
Write an equation for the reaction of n-butyl alcohol with acetyl chloride. What gas evolved
If the specific heat of the salt is 0.663 J/C.g, what is the enthalpy of solution for salt MX if its molar mass is 68.0 g/mol?
At what volume of added acid is the calculated by working an equilibrium problem based on the initial concentration and of the weak base
an aqueous cacl2 solution has a vapor pressure of 81.1 mmhg at 50 c. the vapor pressure of pure water at this
What pH is required to start precipitation of Fe(OH)3 from a 0.110 M solution of FeCl3? Ksp of Fe(OH)3 = 4.0 10-29.
Is always a metal. Is called a catalyst. The magnesium acts as a reducing agent. How many electrons does each magnesium atom lose? Which family of elements in the periodic table contains the most powerful oxidizing agents?
if you prepare a 1.00 m solution of nh4clo4 beginning with water at 22.5 c what is the final temperature of the
silver chlorideagcl often used in silver plating contains 75.27 of silver. compute the mass of agcl essential to plate
Write an equation, using the curved-arrow notation, for the acid-base reaction that will take place when each of the following are mixed. If no appreciable acid-base reaction takes place, because the equilibrium is unfavorable, you should so indic..
How many moles of Al(OH)3 are produced when 50.0 g of KOH react completely in the following equation? AlCl3 + 3KOH = Al(OH)3 + 3KCl
flask of nitrogen is collected over water at a total pressure 765.0 mm Hg. If the partial pressure of the water vapor is 25.0 mm Hg, what is the pressure exerted by the nitrogen?
Silicon has a band gap of 1.1 eV at room temperature. What wavelength of light would a photon of this energy correspond to?
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