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A closed container contains a mixture of helium and argon. The mixture has a density of .8252 g/l at temperature of 298 and pressure of 1 atm. What percentage of gas in container is He?
a gas has a volume of 95 mL at a pressure of 930 torr. what volume will the gas occupy if the pressure is increased to 970 torr?
body scanners used in hospitals operate with 400 radiofrequency energy.How much energy does this correspond to in kilojoules per mole?
converted completely to FeNCS 2+ when the calibration curve was prepared, would this raise or lower the value of Keq? explain?
can you find out the name and formula of the unknown compound and determine the identity of the element?
A student dehydrated 10.0 g of 2-methyl-2-butanol with %50 sulfuric acid and obtained 6.50 g of products. Calculate the theoretical yield and the percent yield.
Given that the partition coefficient for a solute is K in a water-ether solvent extraction system, is it more effective to do one extraction with V mL of ether or three extractions with V/3 mL of ether
show the base-catalyzed condensation and dehydration products from aldol condensation of propanal
How many mL of 0.250 M NaOH are needed to completely saponify 240. g of of glyceryl trioleate (triolein)?
methyl alcohol (CH3OH) is made by reacting carbon dioxide with H2. Starting with 2.5g of H2 and 30.0 L of Co, what mass of methyl alcohol could be produced at STP.
Which of the following is a property of acid solutions?
A 28.0-g sample of water at 250. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
1.0 liter of a buffer solution that is 0.10 M in CH3COOH and 0.10 M in NaCH3COO, how will the pH of the solution change?
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