Answer:
15
Explanation:
Because the ratio of copper in the solution is 15
Answer:
C: Object 1 is moving, and Object 2 is not moving
Explanation:
Object one has unbalanced forces, so it can cause it to start moving ,since one force is moving stronger than its opposing one, but since Object 2 has balanced forces both forces hold it in place.
The number of neutrons is different in each isotope of an element.