Calculate the δg for the following system. then state if the system is spontaneous or not spontaneous. δh = 147 kj δs = -67.0 j/k t = 149 ãƒâ‚ã‚°c 2.8 x 104 kj; not spontaneous 157 kj; not spontaneous 175 kj; not spontaneous 2.8 x 104 kj; spontaneous 157 kj; spontaneous 175 kj; spontaneous

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

Acontrol during an experiment. might change remains constant does not exist does change