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Combustion of a .225g sample of a compound containing only carbon, hydgrogen and oxygen produces .306g water and .561g carbon dioxide. what is the empirical formula of the compound?
A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 331 Calories. Express this value in kJ and in J
A buffer (pH 3.70) was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous solution with a total volume of 1.00 L. To 400 mL of this solution was added 50.0 mL of 1.00 M NaOH. What is the pH of this solut..
Using the structure of mathyl orange as an example, draw resonance froms to show how conjugation extends throughout the molecule.
Write down the secular determinant for the allyl radical, Ch2=CH-Ch2, and estimate the pi-binding energy.
What volume of water vapor is created by the complete combustion of 38.7 liters of methane gas?
assume that ethanol c2h5oh of 160 gramsnbspnbsp at the temperature of 27 degrees celsius is added with ethanol of 280
what mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 160 min. using a constant current
suppose that 0.92 of water condenses on a 85.0 block of iron that is initially at 22. if the heat released during
How many photons strike the CD surface during the playing of a CD 69 minutes in length?
a volume of 200mlk of nitrogen is collected over water at a temperture of 24 degrees celcius and the atmospheric
For 220.0 mL of a buffer solution that is 0.205 M HCHO2 and 0.295 M KCHO2, calculate the initial and the final pH after adding 0.010 mol of NaOH.
When 8.6 g of toluene is mixed with 9 g of pure nitric acid, only 6.7 g of trinitrotoluene (TNT) is recovered from the mixture when it is separated from other undesired byproducts. What is the percent yield of the synthesis? C7H8 + 3 HNO3(l) ? C7H..
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