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?
An 0.3 M solution of calcium nitrate is mixed with a 0.15 M solution of potassium phosphate in a 2.0 L container. Determine the concentration of all aqueous species at equilibrium if 37.24grams of calcium phosphate are formed?
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?
What can you say about the effects of lone pairs on rotation barriers when the barrier for rotation about the C-O bond in methanol is only 1 kcal/mol. recalling the rotation barriers for ethane?
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.
Explain what new substance has been produced when the 2-methylpropene is bubbled into the dilute sulfuric acid at room temperature, it appears to dissolve.
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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