If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.
Answer:
A. an equal and opposite reaction force
Explanation:
This means that there is a natural reaction of force
1. L
Number one because the lines match up
delta g must be negative in order for the reaction to be spontaneous bb ♡
