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How do they correlate? (question 1 and 2)
Having a really hard time with differentiating between endothermic and exothermic processes. A clearer explanation would be great. I don't understand what the difference is between a gas to a liquid or a liquid to a gas.
Methyl tert-butyl ether (MTBE), C5H12O, a gasoline additive utilized to boost octane ratings, has delta Hf= -313.6 kj/mol. Compute its standard heat of combustion in kilojoules.
identify the incorrect names of formulas.
Calculate the maximum mass of pure ethanol that can be vaporized in 10 min from a beaker left in strong sunshine, assuming that the surface area of the ethanol to be 50 cm^2
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is 100K * k (E represents epsilon and k is Boltzmann's constant). Assume that there are 10 particles.
What are aromatic compounds woth reference to structures in organic chemistry.
John takes 3 hours longer than Andrew to peel 500 lb of apples. If together they can peel 500 lb of apples in 8 hours, then how longer would it take each one working alone?
If a minimum energy of 2.00x10^5 J/mol is needed for this process, what is the minimum energy needed from each photon? B. Calculate the wavelength of light necessary to provide photons of this energy
What is the equilibrium concentration of hydronium ion in a solution that is 0.0877 M in HX and 0.240 M in X1- ion?
A 15.00 mL sample of a 0.100 M solution of lead(II) nitrate is reacted with 10.00 mL of 0.170 M sodium chloride. How many grams of lead(II)
Consider titrating 15.0ml of a .245M solution of hydazine, H2NNH2, with a .453M HCl solution. The Kb value for hydrazine is 1.3x10^-6. What volume of HCl needs to be added to the solution in oder to have a bffer system with the maximum capacity fo..
When 2.70 g of this compound is added to 250.0 mL of water, the temperature rises from 23.2°C to 28.8°C. Calculate the heat of reaction (qrxn = ?Hrxn) per gram of compound (in kJ/g).
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