Gravity. The rock is being pushed down and you are counteracting that force with a crowbar pushing it upward.
Potassium is more reactive because it is in group one
Explanation:
To break a chemical bond, it is required that particles must have certain amount of energy so that when they can collide with each other due to this energy.
Therefore, there will exist a certain amount of force between the particles which will help in breaking the chemical bond.
This energy due to the motion of particles is known as kinetic energy.
Thus, we can conclude that to break a chemical bond, particles need to collide with a certain amount of kinetic energy.
Answer:
4.75 or 4.8
Explanation:
density = mass / volume
57 / 12 = 4.75
from here you can leave it as is or round up.
hope this helps!!
Answer:
0.020 kg=20 g this the largest
20.0 mg=.020g
.200g
2000ug
Explanation: