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How much energy is required to vaporize 145g of butane at its boiling point? The heat of vaporization for butane is 23.1 kJ/mol
An automobile gasoline tank holds 35 kg of gasoline. When the gasoline burns, 88 kg of oxygen is consumed, and carbon dioxide and water are produced.
600 torr contains 50.0% Helium and 50.0% Xenon by mass. What are the partial pressures of the individual gasses?
What is the de Broglie wavelength of a 145 g baseball traveling at 30.0 m/s (67.1mph)? Is the wavelength much larger or smaller than the diameter of an atom .
a copper wire is strectched with a stress of 10ksi at 20deg C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 5ksi
We electrolyze a solution containing M2O7(3-) for 43.30 hr using a current of 2.685 amp to isolate M(s), which has an atomic weight of 215.22. How many grams of M(s) will be produced if we operate the system at 100% efficiency
Write the net ionic equations that account for the pH values of: 0.1M NH4Cl (pH 6.25), 0.1M NaC2H3O2 (pH 8.24)
Calculate the pH at the equivalence point for the titration of 0.230 M methylamine (CH3NH2) with 0.230 M HCl.
How many bonds and how many lone pairs are around the sulfur of SO3? a double or triple bond counts as one bond
This sample was reacted with excess ammonia in diethyl ether at 0 c. The product mixture had a specific rotation of -29.9 degrees. If the specific rotation of pure (R) 1-phenyl ethanamine is +39.3 degrees. This reaction resulted in [X] percent inv..
What was your melting point of your impure and recrystallized acetanilide? What does this tell you about the sucess of your purification?
What is the minimum concentration of ammonia that should dissolve AgBr to produce a 0.01 M Ag(NH3)2+ solution
the stretomycin has an osmotic pressure of 8.72mmHg at 23.6 degrees C, what is the molecular weight of the antibiotic?
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