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Compound Y contains only carbon, hydrogen, and oxygen. When a 1.000-gram sample of Compound Y is subjected to combustion analysis, 2.432 grams of CO2 and 0.574 grams of H2O are produced. Determine the empirical formula of Compound Y.
A gas chromatogram of the organic components of a sample of beer using a column that separates compounds on the basis of their relative boiling points provides a GLC trace with several peaks. Two of the smaller peaks, with retention times of 9.56 ..
Calculate the amount of heat in J required to heat 2.00 grams of ice from -12.0 C to 88.0 C. The heat of fusion of water is 6.02 kJ/mol the specific heat capacity of ice is 2.09 J/gC
A student determined the freezing point of pure t-butyl alcohol following the procedure given in this experiment . Because of an experimental error, the freezing point temperature that she obtained was higher than the correct value
In the titration of 68.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.49 M HCl, calculate the pH under the following conditions.
If a zinc surface is corroding at a current density of 3.45x10^7 A/cm what thickness of metal will be corroded in 210 days
Chromium metal can be produced from the high temperature reaction of Cr2O3(chromium(III) oxide) with silicon or aluminum by each of the following reactions
What is the pH of a solution of 0.050M formic acid(HCO2H, Ka=1.8*10^-4) and 0.035M sodium formate
The molality of the solution is determined to be .0480m. What is the molar mass of the substance?
in the electrolysis of aqueous solution of Na2SO4, what reactions occur at the anode and the cathode. explain
A sample of granite contains various oxides of silicon, aluminum, sodium, potassium, calcium, and iron. Each of these oxides gives the granite a coarse-grained texture.
In an experiment, 5.00 L of N2 is saturated with water vapor at 22°C and then compressed to half its volume at constant T. (a) What is the partial pressure of H2O in the compressed gas mixture?
Write the Henderson-Hasselbalch equation for a solution of propanoic acid (CH3CH2CO2H, pKa = 4.874 ) using HA and A- in the expression. Using this equation, calculate the quotient [A-]/[HA] at A) pH 4.01 B) pH 4.874 C) pH 5.20
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