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When pentane C5H12 burns in oxygen, it produces carbon dioxide and water. If 85.5 g of pentane is burned, what voulume of carbon dioxide is produced at STP (The density of CO2 is 1.997 g/L.)
The Greenhouse Effect - how the sun's visible light is converted into trapped infra red light and heat, causing the planet to warm up.
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
Calculate the final temperature when a 24.7 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 78.0 oC. Assume that there is no loss or gain of heat from the surroundings.
The fluoridation of city water supplies has been practiced in the United States for several decades. It is done by continuously adding sodium fluoride to water as it comes from reservoir.
Calculate (a) the mole fraction of the solute, (b) the number of moles of solute in the solution, and (c) the molecular mass of the solute.
A fluorinated organic gas in a cylinder is com- pressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
Calculate the percent yield of if the reaction produces 169g of C2H5Cl .
In a combustion reaction 4 moles of C8H18 react with 8 moles of O2. If the actual yield of CO2 produced is 28.16 grams, what is the percent yield?
A 15.0--mL unknown sample of aqueous acetic acid, CH3COOH(aq), was titrated using 0.800 M NaOH. If the titration endpoint was found to be 20.0 mL.
Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s)+2NH4Cl(s)--->2N2o(g)+CaCl2(s)+4H2O(g)
Application of Avogadro's law - To evaluate the volume of a gas using Avogadro's Law.
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
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