Determine the gaseous compound weighs
A certain anesthetic contains 13.5 % hydrogen, 64.9 % carbon, and 21.6 % oxygen by mass. At the temperature of 120C and 750mmHg, 1.00L of the gaseous compound weighs 2.30g. Determine the molecular formula of the compound?
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A soluble fluoride-containing salt such as NaF is added to "fluoridate" the water when a sample of hard water contains about 2.0x10-3MCa2+, describe the maximum concentration of F- that can be present without the precipitation of CaF2?
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The speedboat takes one hour longer to go 24miles up the river than to return. If boat cruises at 10miles per hour in still water, determine rate of current?
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At 140 C a student wished to prepare ethylene gas by the dehydration of ethanol, using sulfuric acid as the dehydrating agent. Allow-boiling liquid was obtained instead of ethylene.
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Determine the major component of the mother liquor obtained in the re-crystallization step? Discuss why didn't this component crystallize along with the 4-nitrobromobenzene?
The hypotenuse of the right triangle is 12inches and area is 24 square inches. Determine dimensions of triangle, correct to one decimal place.
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