Determine the value of kn for neautralization of aniline
Aniline (C6H5NH2, Kb = 4.3 x 10^-10) is a weak base used in the manufacture of dyes. Calculate the value of Kn for neautralization of aniline by vitamin C (ascorbic acid, C6H8O6, Ka = 8.0 x 10^-5). Does much aniline remain at equilibrium?
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A heat-engine of 32% thermal efficiency is used to drive a refrigerator having coefficient of performance of 5. Determine the heat input into the engine for each MJ removed from the refrigerated space by the refrigerator.
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In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat solution of the salt. I calculated that the calorimeter constant for the water we had was 883.194 Joules.
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If the work output of the engine 1 is twice more than that of engine 2, determine a. the intermediate temperature b. the heat rejected to the cold sink c. the efficiency of each heat engine.
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.090. Initially, how fast was the skier going?
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What is the probability that 5% of the people there are female? What is the probability that less than 90% of the people there are male? What is the expected number of females currently there?
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