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1) The nonvolatile, nonelectrolyte estrogen (estradiol), C18H24O2 (272.4 g/mol), is soluble in ethanol, CH3CH2OH.
Calculate the osmotic pressure (in atm) generated when 13.2 grams of estrogen are dissolved in 263 mL of a ethanol solution at 298 K.
________ atm
2) The ionic compound Na2Cr2O7 is soluble in water. Calculate the osmotic pressure (in atm) generated when 17.5 grams of sodium dichromate are dissolved in 87.4 mL of an aqueous solution at 298 K. The van't Hoff factor for Na2Cr2O7 in this solution is 2.54.
_________ atm
3) In a laboratory experiment, a student found that a 112-mL aqueous solution containing 2.379 g of a compound had an osmotic pressure of 31.3 mm Hg at 298 K. The compound was also found to be nonvolatile and a nonelectrolyte. What is the molar mass of this compound?
__________g/mol
Question- If bond-pair bond-pair repulsion is maximum for the C-H bonds in CH3X,? All bond angles is 450o for CH3X
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 30.6 moles of water vapor? Express your answer with the appropriate units.
The pressure gauge on a 20.0 m3 tank of nitrogen at 25 C reads 10 bar. Estimate the mass of nitrogen in the tank by : (a) Direct solution of the ideal gas equation of state. (b) Conversion from standard conditions.
Rank each of the following measurements from smallest to largest
1.50 grams of butane (C4H10(g), ΔHf° = -125.6 kJ/mol) is completely combusted in the presence of excess oxygen. Assume that all the heat produced goes into heating a cylindrical plate of aluminum (d = 2.70 g/cm3) that is 2.00 cm thick and 10.0 cm ..
Political realism focuses on the role of power in determining how states interact with each other and strive to achieve their national interests.
Compute the Spectral radiance for a blackbody at 2500 K for the wavelength range 4500 angstroms to 4500 + 10 angstroms
Find out the value of Kp of the following reaction,N2O4 (g) 2NO2 (g) Given the number of moles of N2O4 and NO2at equilibrium are 0.05 moles and 0.09 moles respectively. The total pressure is 5kpa
what is the rate constant of a first-order reaction that takes 2.50 minutes for the reactant concentration to drop to
canadian 10cent and 25cent coins are made of pure nickel which has a density of 8.902 gcm3. suppose each dime weighs
Calculate ?Go and Kp for the following equibibrium reaction at 25'C/ The ?Gf o values are 0 for Cl2(g), -286 kJ/mol for PCl3(g), and -325 kJ/mol for PCl5(g). b) calculate ?G for the reaction if the partial pressures of the initial mixture are PPCl..
calculate the expected ph of a 25.0 ml solution of 0.200 m acetic acid that is being titrated with a 0.100 m solution
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