An air conditioner using Freon as a gas removes heat of 1.5 k. Cal. s–1 from a large room. The power required to run it is 2 kW. If the typical value of q2/w is 1/10
that of a Carnot refrigerator and the temperature outside is 313 K.
[Cv = 0.064 J K-1 mol-1]
(a) Find the work done, w of the system.

Pauling and lewis questioned the extreme definitions of bonds. they wondered if bonds might be described somewhere in between the two extremes (covalent and ionic). on the basis of experimental data,pauling confirmed that bonds could be ionic, covalent, and for those, in between, exhibit a degree of ionic character. he theorized that the major factor was how strongly the atoms in the bond attracted the electrons. pauling called this factor - the tendency of an atom to attract electrons in a bond.

0.09 moles of sodium sulfate in 12 ml of solution

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?