Which of the following samples had the lowest average kinetic energy?

Answer:
B. 10 mL of Cabr2(aq) at 35 degrees celsius
Explanation:
The colder something is the more the atoms are compressed together; atoms can't move as much. 35 degrees is the warmest option, so it makes the most sense.
Answer:
15ml of nacl(aq) at 5c
Explanation:
Low temp and low volume equals low energy