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Rubbing alcohol (isopropanol) sold by ACME chemical supply Co. is labeled as 69.9% (V/V) isopropanol the rest is water. The density of this rubbing alcohol is listed as 0.876 g/mL density of pure isopropanol is 0.785 g/m density of pure water is 1.000g/mL. What is the molality mole of solute per kilogram of solvent of water in this solution in other words, consider it a solution of water in isopropanol?
Draw a tetra-peptide that FPHD at pH 2.0. Clearly indicate with a circle what groups would be charged if the pH was changed to 12.0. Draw a box around the peptide bonds
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 27.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 68.00°C.
A sugar-water mixture contains 45.8 g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
Compute the pH of a solution of 30mL of .0580 M malonic acid while it is titrated to the second equivalence point with .100 M KOH.
Consider reactions of the same Stoichiometry that are characterized by the following Kc values. Which reaction will have the smallest amount of product at equilibrium.
Calculate the molarity of the resulting solution if 0.126 grams of Hydrogen ion [H+] is dissolved in 250 mL of distilled water.
Compute the average atomic mass for Gallium if 60.00% of its atoms have a mass of 68.926 amu as well as 40.00% have a mass of 70.925) and don't know how to determine the abundance of the element
Calculate the theoretical yield of C2H5Cl when 110 g of C2H6 reacts with 226 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Calculate the ΔH(in KJ/mol and also the ΔH in Kj/g NHΔ4NO3) for the solution process.Assume the specific heat of the solution is the same as of taht of pure wate which is ΔH=4.18j/g.K)
If the vapor pressure of pure water at 25 C is 23.8mmHg What is the partial pressure of water over the solution? Assume ideal behavior for the solution.
An inventor designs a new heat engine that can be modeled on the Carnot cycle. The working gas in the heat engine is 1 mole of helium. The isothermal expansion results in the internal volume changing from 1 L to 3 L
How much heat is liberated by the combustion of 183 g of hydrogen? ΔHcomb = -286 kJ/mol.
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