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The heat of combustion of methane, a component of natural gas, is212 kcal/mol. That of propane, a component of LP gas, is530kcal/mol. On a gram-for-gram basis, which hydrocarbon is the better source of heat energy?
What volume in mL of concentrated nitric acid (72.0% HNO3 (w/w), sp. gr. 1.42) is required to prepare exactly 2.00 L of 0.200 M HNO3?
An airplane is pressurized to 650 {rm mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 {rm ft} altitude. If the partial pressure of oxygen drops below 100 {rm mm,Hg}, passengers become drowsy.
explain why the carbonyl group co groupof methyl benzoate is a m-directing group. would you expect methylbenzoate to
causes the temperature to rise from 23.98 degree C to 26.45 degree C. What is delta E for the reaction of 1.00 mole of C2H5OH? C2H5OH(l) + 3O2(g) ? 2CO2(g) + 3H2O(l)
Calculate the composition of the exhaust gas in terms of mole fraction of CO, CO2, O2, N2, and H2O. Assume CH4 is completely reacted and N2 is unreacted.
How much limestone must be decomposed by heating to produce 150.0 grams of lime, CaO?assuming that the limestone contains 85.0% pure CaCO3.
The solubility of radium oxalate RaC2O4 in warm water is 0.0174 mols/Liter. Calculate Ksp for this compound. Radium is a 2nd column element somewhere below calcium.
Give the structures of two different aromatic compounds that could be used to synthesize benzene-1,2-dicarboxyclic acid
find the contour length (chain length) for a fully extended polythylene molecule that has a degree of polymerization of (n=45000),given that the length of c-c bond is 1.54 Ao.
Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HClO with 200.0 mL of 0.30 M KClO. The Ka for HClO is 2.9 × 10-8.
For the gas phase reaction of carbon monoxide with water to produce carbon dioxide and hydrogen gas, suppose you start with 1.00 mol each of CO and H_2O in a 50.0L vessel. How many moles of each substance are found in the equilibrium mixture at 10..
Calculate the volume of 6 M HCl needed to neutralize 30 mL of 10% NaHCO3 (g/mL). Hint: determine the molality of the 10% NaHCO3 solution.
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