Asample of gaseous pcl5 was introduced into an evacu- ated flask so that the pressure of pure pcl5 would be 0.50 atm at 523 k. however, pcl5 decomposes to gaseous pcl3 and cl2, and the actual pressure in the flask was found to be 0.84 atm. calculate kp for the decomposition reaction pcl5(g) 34 pcl3(g) 1 cl2(g) at 523 k. also calculate k at this temperature.

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas

The mass of an object will be the same on the earth as it is on the moon. need asap

3. consider a process in which a gas with the properties of air expands at constant pressure as described by the cups of air discussion in class. one kilogram of air starts out at 1 atm and 290 k. the air expands its volume by absorbing a sufficient amount of thermal energy to increase the temperature at constant pressure to 350 k. a. on a p-v diagram, sketch this process with point a as the starting point and point b as the ending point. b. if the process is completely reversible, calculate the thermal energy added from an external source. c. calculate the entropy change for this process assuming it is reversible. d. calculate the work delivered externally if this is a reversible process. e. if the process is completely irreversible, calculate the amount of entropy change for the process that is due to irreversibilities. f. if the process is completely irreversible, calculate the amount of thermal energy added from an external source and compare this result to the thermal energy calculated in part b. g. for the completely irreversible process, calculate the entropy change due to this thermal energy addition. h. for the completely irreversible process, calculate the total entropy change and compare it to the entropy change in part c.