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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.

What does the law of conservation of mass state?

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)