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Gas mixture contains helium and oxygen @ partial pressures of 255 torr and 0.450 atm. what is the total pressure in mmHg of the mixture after it is placed in a container 1/2 the volume of the original
write out a balanced reaction of methyl salicylate with 2.0 M sodium hydroxide solution to yield, upon work-up with 6.0 M hydrochloric acid, salicylic acid and methanol 2) provide the complete mechanism for the above reaction
A buffer is composed of 0.400 mol H2PO4 and 0.400 mol HPO4 diluted with water to a volume of 1.0 L. The pH of the buffer is 7.210. How many moles of HCL must be added to decrease the pH to 6.210? The answer is .327 mol. Can you please explain how ..
When the reaction consumes 10.0 g of liquid N2O4, it releases 124 kJ of heat. What is the value of ?H (in kJ per mole N2O4) for the chemical equation as written
All numerical answers must be reported to the correct number of significant figures. What volume of 1.000 M LiCl must be diluted with water to prepare 250.0 mL of 0.100 M LiCl
Acid-catalyzed dehydration of cyclobutylmethanol proceeds via an E1 mechanism and gives two alkenes
Define ion, cation, anion. How are each formed. Can you pleas provide examples of cations and anions. What is a Polyatomic ion
6naoh 2al -gt 2na3alo3 3h2what volume of hydrogen gas measured at stp would result from reacting 75.0g of sodium
given the following equation6h2onbsp nbsp 6co2nbsp --gtnbsp c6h12o6nbsp nbsp 6o2nbspnbspnbspnbsp?h2803kjmolfind the
how to draw mechanisms for organic chemistry? Would really like to learn how to draw them.
An aerosol spray can of deodorant with a volume of 320 mL contains 2.8 g of propane gas (C3H8) as propellant. What is the pressure in the can at 20 degrees Celsius?
A sample of He gas was found to effuse 6.3 times faster than an unknown gas. What is the molecular weight of the unknown gas
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate.
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