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Consider 1 mole each of gaseous He (MM=4.0 g/mol) and N2 (MM=28 g/mol) at the same temperature and pressure. The molecular diameter of N2 is 1.7 times larger than the atomic diameter of He. Calculate the ratios of Z11 for these two gases as Z11(He)/Z11(N2).
a solution of ethanol c2h5oh in water is prepared by dissolving 58.0 ml of ethanol density 0.79 gcm3 in enough water
The geometric angle BETWEEN the two bonds that connect an alpha-carbon to its nearest neighbors on the polypeptide backbone is approximately 109 degrees. Explain.
Suppose you have a sample of sodium weighing 11.42 g. How many atoms of sodium are present in the sample.
If the following reaction has the following concentration at equilibrium. What is the equilibrium constant (k)? include units. if any [A] = 0.05 atm [c] = 0.2 atm B has a molecular weight of 200 and a beautifuk orange color?
A tank initially at a pressure of 6.70 atm contains 20.0 moles of oxygen gas at 25.0 degrees celsius. Its temperature is then increased to 45.0 degrees celsius
You transfer a sample of a gas at 17*C from a volume of 5.67L and 1.10atm to a container at 37*C that has a pressure of 1.10atm. what is the new volume of the gas?
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0360 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate. What percentage of the Ca2 (aq) can be separated from the Ag (aq) by s..
What is the reaction order with respect to chloroform? What is the reaction order with respect to chlorine.
Calculate the acitivation energy for the decomposition. b) To test solubility, 0.020 mol of solid lead iodide, PbI2, is added to 0.500 L of water. after eqilibrium has been established 0.00076 mol of Pb^2+ (aq) and 0.00152 mol of I^- (aq) are pres..
The half life of the radioisotope^ 158,47Eu is 1.0 hr.the decay of a 16.0g sample of the isotope to 1.25g required how many hours
how many grams of C5H10O2 need to be dissolved in 50 mL of solution, in order to have a 0.1 molar solution?
Calculate q, and determine whether heat is absorbed or released when a system does work on the surroundings equal to 64 J and ?U = ?213 J.
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