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A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 251.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid. What is the original boiling point?
below which there is too little fuel to support combustion. For propane, the LFL is 2.1 mol-%. What is the mol fraction of propane in the air at the stoichiometric concentration?
a certain first-order reaction a--gtproduct has a rate constant of 3.90times10-3 s-1 at 45c . how many minutes does it
You wish to extract an organic compound from an aqueous phase into an organic layer (3 to 6 extractions with a separatory funnel). With regard to minimizing the number of transfer steps,
a temperature of 37 degrees Celcius were heated to a temperature of 250 degrees Celcius. If the volume does not change, what is the new pressure of the gas in atmospheres?
The equivalence point is reached after addition of 25.0 ml Naoh a) calculate the ionication ka for the acid HA
For the first-order reaction, 2N2O---> 2N2 + O2, what is the concentration of N2O after 3 half-lives if 0.15 mol of N2) is initally placeed into in a 1.00-L reaction vessel
a tank with a volume of 1.00M3 is filled with air at 0 degrees to 20 times its atmospheric pressure. How much volume will occupy at 1 atom and room temp?
excess permanganate remains after the reaction period, a small amount of ethanol
If the original sodium tartrate solution had a concentration of 1.00 M instead of 0.100 M, what would the concentration of copper be in a solution created by combining 10 mL of it with 10 mL of the 0.100 M copper (II) sulfate solution.
If 23mL of 6.4M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid.
Write the Nernst equation for this reaction, and then replace the molality of H+ with a relation using Kw and the molality of OH-. Rearrange this expression to solve for pKw (=-logKw) in terms of the standard and measured cell potentials and the g..
determine the molarity of a saturated nai sodium iodide solution aqueous formed as twenty five degree celsius
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