If:
work done = force x distance
distance = work done ÷ force
so:
50 ÷ 2.5 = 20m
<span>With any element, there are a range of isotopes . . . a weighted average mass is used because there exist different isotopes of that element, each of varying mass. A weighted average accounts for the fact that the average mass (that may likely be measured from a random sample of the element) will most likely reflect the average mass of the more abundant isotopes. So the weighted average mass will be most comparable to the more abundant isotopes.</span>
Answer:
A. Antoine-Laurent Lavoisier
Explanation:
Hope this helped!
