7. A sample of gas has a volume of 15.0 L when at a temperature of 220 K and a pressure of 310kPa. (Ideal gas Law)
a. 4a. Find the number of moles of gas.
b.
4b. If there are 52 g of the gas in the sample, which noble gas is it?

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.