Can you please help me with the physics homework

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.

True or false graphs must include scales that increase by the same amount

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?