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A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas with the idea of trying to identify the gas. The wet gas collected occupies a volume of 279 mL at a pressure of 728 torr and temperature of 28.0oC. The vapor pressure of water at 28.0oC is 0.0372 atm. 1. Calculate the volume (L) that the gas occupies after it is dried (the water vapor removed) and stored at STP.
Determine the mass of propylene glycol neded to substitute one gallon of ethylene glycol and also find out the volume of propylene glycol, required to get the same antifreeze protection as one gallon of ethylene glycol.
what is the internal energy change of a gas gives off 312 of heat while being compress 862mL by a pressure of 1.64 bar. what are internal energy change in surrounding and universe for the process
Calculate the solubility of carbon dioxide in water at an atmospheric pressure of 0.38 atm.Carbon Dioxide has a mole fraction of
Calculate the cell potential for the following reaction as written at 53C, given that [Zn2+]= .841M and [Fe2+]= .0160M. Standard reduction potentials are Zn(s)= -.76, Fe2+(aq)= +.771, Zn2+(aq)= -.76, Fe(s)= -.04
Find the partial pressure of each produce and the total pressure in the flask at the end of the reaction.
the change in energy of each system and also of the composite system. the change in entropy of each system an also of the composite system.
calculating the pH of the final solution at equivalance point. Please show a step-by-step process
The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
the peptide Phe-Val-Lys-Ser using the appropriate protease in a phosphate buffer solution at pH=7. What two species would actually constitute the phosphate buffer?
An aqueous solution is six percent by mass methanol,, and has a density = 0.988 g/mL. Determine the molarity of ethanol in the solution.
Calcite (CaCO3) has two types of bond. What are the two types? Demonstrate which is the stronger by calculating the degree of ionic character of each bond
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