Answer:
Explanation:
The concept of mass balance around a distillation tower is utilized.
Each column undergoes mass and component balance, with relevant substitutions and analyses detailed in the attached documents.
After four hours of cooling, the soup reached a temperature of 140 F (or) 42 C.
Explanation:
A food worker allowed a cup of soup to cool for two hours,
step 1: The temperature attained in two hours is 70 F (or) 21 C
step 2: Consequently, in four hours, this doubles the value
Therefore, the temperature after four hours is 2(70)= 140 F (or) 2(21)= 42 C