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0.102g of an unknown compoud dissoleved in 100. ml of water has an osmotic pressure of 28.1 mmHG at 20 degrees celcius. Calculate the molar mass of the compound.
A. 1.15 g/molB. 0.872 g/molC. 1.10 X 10>2 g/molD. 663 g/molE. 727 g/mol
The equilibrium constant, Kp, for the following reaction is 9.4 at 500.0 degrees C. A mixture in a container at this temperature has a total pressure of 2.0 atm. The molar percent of N2O4 is 12.0% and NO2 is 88.0%.
Assuming an ideal solution, what is the molecular mass of the compound?
The reaction of copper metal with silver ions in a solution if silver nitrate is spontaneous . Calculate she standard cell potentiom to show that this is so.
What single reagent could you add that would allow you to differentiate between the members of each pair of solid compounds below? Tell what happens to each substance when the reagent is added and write a balanced net ionic equation wherever a rea..
Ethanol is a common additive to gasoline. Using the provided equation, determine how many grams of ethanol are needed to provide 293 kJ of heat.
A solution is composed of 1.60 mol cyclohexane (P=97.6 torr) and 2.10 mol acetone (P=229.5 torr). What is the total vapor pressure Ptotal above this solution? Express your answer numerically in torr.
After treatment with trypsin, which cleaves at R and K, there were 3 fragments: two dipeptides and MGAV. What is the sequence of the peptide? Use the one-letter abbreviations for the amino acids, and do not use dashes.
Gilman reagents will react with alkyl halides to form carbon-carbon bonds. Outline a synthesis of Ph2CuLi and use it to make butylbenzene isomer free. What other way can you make butylbenzene isomer free?
A metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84 g/cm3. Calculate the atomic radius of the metal.
A first-order reaction has a half-life of 55.0 min at 25 ºC and 6.8 min at 100 ºC. What is the activation energy for this reaction
Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.40 mol/L. (Assume T = 25°C.)
determine the number of stereoisomers for the following. Sketch these isomers and identify pairs of enantiomers ABA,
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