¿Cuántos protones, neutrones y electrones hay en cada uno de los siguientes átomos? Lithium (Li)
p =
Magnesium (Mg)
p =
Carbon (C)
p =
Oxygen (0 )
p =
Chlorine (Cl)
p = ​
n =​
n =
n =
n =​
n =
e = ​
e = ​
e = ​
e = ​
e =

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.