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A mixture containing 0.543 mol He(g), 0.343 mol Ne(g), and 0.132 mol Ar(g) is confined in a 7.00-L vessel at 28°C. (a) Calculate the partial pressure of each of the gases in the mixture. He atm Ne atm Ar atm (b) Calculate the total pressure of the mixture. atm
Of sublimation, recrystallization, distillation, and extraction, which purifications methods should be used to purify the following: a) a crude solid mixture that is 90% pure
The following alcohol has been subjected to acid-catalyzed dehydration and yields a mixture of two isomeric alkenes. Draw the two alkenes, the major and minor product as predicted by the Zaisev rule.
a testing facility found that 8.351023 molecules of carbon dioxide were produced when a sample of octane was burned in
Why is a vapor unlikely to behave as an ideal gas near temperature at which vapor would liquefy?
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased
State whether the sign of the entropy change of the following processes will be positive or negative. a. PCl3 (l) + Cl2 (g) -> PCl5 (s)
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
How many grams of solid sodium phosphate, Na3PO4, are needed to prepare exactly 250ml of a 0.500M Na+ solution?
If the mass of the Co(NO3)2*6H20 obtained to prepare the stock solution had been more than the mass that you recorded would the concentration of the unknowns have been too high
An unknown amount of Lithium hydroxide is dissolved in 50.0 mL of water. If it take 14.7 mL of a 0.150 M solution of oxalic acid (H2C2O4) to neutralize the lithium hydroxide solution, what is the mass of lithium hydroxide (in grams) that was disso..
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.(a) 0.0214 mol of sodium phosphate in 10.5 mL of solutionchemical concentration Mcation concentration Manion concentration
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