Heat energy is transferred from sun to the earth
The surface of the sun is at approximately 5700K and the temperature of the earth's surface is about 290K. What is the total entropy change occurs when 1000J of heat energy is transferred from the sun to the earth.
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You have a 1 liter container which contains 0.5 liters of water at 25 degrees celsius that is sealed. You then add 1 μg of phenanthrene to the water. The phenanthrene has a K' H of 0.001 and a log KOW of 4.46 at 25 degrees celsius.
A silver bar of length 30 cm and a cross-sectional area 1.o cm2 is used to transfer heat from a 100oC reservoir to a 0oC block of ice. How much ice is melted per second? (For silver, k= 427 J/s.m.oC. For ice, Lf= 334000 J/kg.)
In the titration of acetic acid and NaOH titration the use of the color indicator mandates that excess base be added in order to detect the reaction endpoint.
If you found this clock running too slowly, explain how would you adjust the circuit parameters to make it run faster?
Water is the working fluid in an ideal regenerative Rankine cycle. Determine for the cycle amount of steam extracted to the open feed heater.
You have toseparate 4-toluic acid (a strong acid, pKa 4.36 - look upstructure) from 4-bromoaniline (a base - look up structure).Assume the two substances don't react with each other.
If the two-block system acclerates at 0.5 m/s2, what is the tension in the second string attached to the 8 kg mass?
If the number of people working is 2 stantard deviations above the mean, how many standard deviations above or below the mean do you expect sales to be? (Below or Above) What value of sales does that correspond to?
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