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Liquid benzene, C6H6, (density = 0.877 g/mL) can be used as a fuel. What is ?H in kJ for the combustion of 2.86 L of benzene producing CO2(g) and H2O? Assume that the heat of combustion of benzene is -4.18 x 103 kJ/mol. Enter your answer with three significant figures in exponential format (1.23 x 104 = 1.23E4).
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.654 kJ of heat. It shrinks on cooling, and the atmosphere does 385 J of work on the balloon.
When 338 g of Bi2O3 reacts with excess carbon, how many moles of Bi2O3 react?
Briefly explain why it is important to allow a hot sample to cool to room temperature before you determine its mass.
When the band relaxes, the chains return to a tangled state. what happens to the entropy of the band when a stretched band relaxes
The half-life of U-235, an alpha emitter, is 7.1*10^8 yr.Calculate the number of alpha particles emitted by 9.1 mg of this nuclide in 8.0 minutes.
From the above data, find the number of millimoles of acidic impurites and what is the ratio of acetylsalicyclic acid to other acid impurites?
when 0.273-gm of Mg is reacted at high temperatures with N2 to produce 0.378-gm of a solid, MgxNy. Calculate the empirical formula of the product.
None of the desired ether was obtained. What product was formed and why did this route to the ether fail? Suggest a different substitution reaction that should yield the desired product.
What is the percent yield of lithium nitride if 76.8 g of lithium nitride is recovered from reacting 56.0 g of nitrogen gas with 56.90 g of lithium metal?
Determine the calculated pH of the solution if initially there is 2.0mL of CH3COOH at an initial concentration of 0.89M and 0.80mL of 1.0M Hydrochloric Acid is combined.
how many grams of potassium bromide are required to prepare 350 mL of a .200 M solution.
Would you expect to find more dissolved oxygen in ocean water around the Northern latitudes or in ocean water close to the equator?
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