An isolated system is a thermodynamic system that cannot exchange either energy or matter outside the boundaries of the system. An isolated system differs from a closed system by the transfer of energy. Closed systems are only closed to matter, energy can be exchanged across the system's boundaries.
Answer:
3/2
Step-by-step explanation:
21/5×5/14
105/70
divide by 5
21/14
divide both by 7
3/2
4/5=0.8
1/50=0.02
Hope that helps