Answer:
There are 4 Aluminum atoms in 4Al(OH)3.
She does 200J .
We know she uses 20N of force and 10m is the distance. We multiply both numbers and we are given our answer of 200J. Hope this was helpful. :)
Light year is light in a year so 4 light years are 4 Earth years
The answer is 80 J of electrical energy
A is a good example, i suppose.
