Asolution contains equal amounts of ammonia and ammonium chloride, and is buffered at a ph of 9.25. which action will most strengthen the buffering capacity at this ph?

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

Anybody wanna ? (picture included? )