For the reaction 2 A(g)⇌B(g)+2 C(g), a reaction vessel initially contains only A at a pressure of PA=225 mmHg. At equilibrium, PA=55 mmHg. Calculate the value of Kp. (Assume no changes in volume or temperature.)

What is the number of moles in 15.0 g ash3?

Which statement best describes the function of enzymes?

Solid tin exists in two forms: white and gray. for the transformation sn(s, white) → sn(s, gray) the enthalpy change is -2.1 kj/mol and the entropy change is -7.4 j/(mol*k). a. calculate the gibbs free energy change for the conversion of 1.00 mol white tin to gray tin at -30℃. b. will white tin convert spontaneously to gray tin at -30℃? c. at what temperature are white and gray tin thermodynamically equivalent at a pressure of 1 atm?