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hanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline mixtures. Calculate the ?H°rxn for the combustion of ethanol.(?H°f [C2H5OH(l)] = -277.7 kJ/mol; ?H°f [CO2(g)] = -393.5 kJ/mol; ?H°f [H2O(g)] = -241.8 kJ/mol)
what is the concentration of toluene in the air space of the bottle and what is the concentration of toluene in the water? The dimensionless Henry's Law Constant for toluene at 25 degrees C is 0.265 (mg/Lair)/mg/Lwater).
I have a 3-methyl-1-Pentyne compound starting in an only (s) configuration and I'm putting in H2 and Pt. The product of this reaction would be.... a) Only (S) b) Only (R) c) (R) + (S) d) Achiral
Calculate the equilibrium constant kc for a reaction occuring at a temp 0f -19 degree C and when delta G of 1.6 KJ/mol(use R =8.314 J/mol and 273 for kelvin conversion)
A saturated solution of potassium phosphate was filtered and then titrated. The concentration of [K+] was found to be 0.00956 M. What is the concentration of phosphate ions in this saturated solution
Cells use the hydrolysis of adenosine triphosphate ATP as a source of energy The conversion of ATP to ADP has a standard free-energy change of - 30.5 kJ/mol
Suppose that a liquid is 11 times denser than water If you were to sip this liquid at sea level using a straw what would be the maximum length of the straw
Write the balanced chemical equation that represents the addition of CL2 to CH3CH=CH2.
it is sometimes doped to form an n-type semiconductor. Explain the difference between an intrinsic and an n-type semiconductor. Suggest an element that might be added to germanium to create the n-type semiconductor.
The entire spaceship has a weight of 12,445kg. The gravity of Venus is 1/2 of Earth. Find the weight and mass of the entire spaceship.
Draw a structural formula of an alkene or alkenes (if more than one) that undergo acid-catalyzed hydration
In a hot flame, the emission intensities of the Sodium lines at 589 and 589.6nm are greater in a sample solution that contains KCl then when this compound is absent
Calculate Pt, in atm, for three different gases at partial pressure of 144cm, 800mm, and 1.3m of Hg.
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