Tinoco Problem 1 Page 96 (Chapter 3) a. 5 pts, b. 5 pts 2. Tinoco Problem 3 Page 96, Parts a, b, c only. a 2 pts, b 4 pts, c 4 pts 3. Calculate the entropy change when argon at 298 K and 1 bar in a container of volume 5 l is heated to a temperature of 373 K and final volume of 10 l. 10 pts 4. Tinoco Problem 24 Page 99 (Chapter 3) a. 3 pts, b 3 pts, c 4 pts 5. a. Calculate the entropy change for the condensation of 1 mole of ethanol vapor to liquid at a pressure of 1 bar. b. What is the entropy change when ethanol freezes at a pressure of 1 bar

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Which best explains why an iceberg floats?