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what is the mole fraction of ethanol, C2H5OH, in an aqueous solution in which the ethanol concentration is 4.6 molal?
Calculate the fraction of methyl isonitrile molecules that have an energy of 160.0 kJ or greater at 510k and 514 k. What is the ratio of the fraction at 514 k to that at 510 k.
Predominant Organic Acids Present in Softwoods such as Pine, A wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce.
Oxygen at 150 K and 41.64 atm has a tabulated specific volume of 4.684 cm3/g and a specific internal energy of 1706 J/mol.
Draw two pictures. One of a graduated cylinder filled with liquid in which it is possible to read its volume as 10.oo ml and one of a second graduated cylinder filled with liquid
Consider the reaction 2NH3 + CH3OH → products .How much NH3 is needed to react exactly with 21 grams of CH3OH?
Calculate the mass of reagents required to prepare 100 mL of a 275 mM solution of monobasic phosphate and 100 mL of a 275 mM solution of dibasic phosphate, each containing 2.75 mM MgCl2
Will the yeast cells or the corn seedling have a higher metabolic rate when compared on a mass specific basis (in moles ATP/gram organism x hr)?
with vapor pressures at room temperature of 88, 680, 155, respectively, in order of decreasing boiling points.
calculate the mass of sodium nitrate required to produce 7.00 grams of oxygen according to the following reaction: 2NaNO3 = 2NaNO2 + O2
The heat fusion for water is 80. cal/g. How many calories of heat are released when 20 g of water is at 0 C is frozen to ice ?
The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria. (Ksp(ZnC2O4)=7.5X10^-9, Kb1=1.8X10^-10, Kb2=1.8X10^-13).
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