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An experimental fuel is a mixture of 81% ethanol and 19% gasoline by volume. Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline. Assume the densities of ethanol and gasoline are .789 and .737 g/mL respectively and that n-nonane is an appropriate model hydrocarbon for gasoline.
How many liters of CO2 are produced when 15 liters of O2 are consumed
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results from the trypsin, chymotrypsin, and cyanogen bromide treatments to suggest the amino acid sequence of this decapeptide.
A mixture of cyclopropane gas and oxygen is used as an anesthetic. Cyclopropane contains 85.7% C and 14.3% H by mass. At 50.0C and .984 atm pressure, 1.56 g cyclopropane has a volume of 1.00 L. What is the molecular formula of cyclopropane?
Predict whether the following salts, when dissolved in water; produce acidic, basic, or neutral solutions:
The ionization energy of tin is 708.0 kJ/mol. Calculate the maximum wavelength of light that will ionize tin.
the approximate equivalence point of a ph meter titration before before carrying out the ph titration
The half-life for the second order reaction of a substance A is 55 seconds when [A]o is 0.84 M. What time is needed for the concentration to decrease to 1/4 of the original value.
For AuCl, Ksp = 2.0 x 10-13 at 25°C. What is the solubility of AuCl at this temperature?
Calculate the formula of a compound, given that 55.85 g of iron combines with 32.06g of sulfur.
How would this computed ? compare with the dimensions of a typical atom? (-1 if much smaller, 0 if about the same magnitude, +1 if much bigger)
Sketch the line-bond structure for each molecule or polyatomic ion of the following. Designate the formal charges where applicable.
An unknown compound degrades when exposed to sun light by first order kinetics. The half-life for this process is exactly 5.12 weeks. What is the rate constant
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