Hydrogen gas p1=15 psia, t1= 80 degree f. compressed at a rate of 20 ft3/min in a hot environment until p2= 75.3 psig. heat is introduced at a rate of 20 btu/min and the change in entropy is 0.268 btu/min-r.

t1= 540r, h1= 3660.9, u1=2588.5, sp. heat = 31.232

(a) what is final t in r?

(b) what is the work equivalent hp if the system is non flow?

(c) work if the system is steady flow in btu/min?

Which statement about the stamps is correct?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Answer asap need 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.