Calculate ΔS(for the system) when the state of 2.00 mol diatomic perfect gas molecules, for which Cp, m (7/2)R, is changed from 25 C and 1.50 atm to 135 C and 7.00 atm. How do you rationalize the sign of ΔS?

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.