Hello! There are many indicators to show a sign that a chemical reaction has occured. These are 3 as followed.
1. An odor is produced.
2. A change in temperature.
3. A color change.
Others can be a formation of a solid or a gas.
D.) In order to calculate both of them, we must know the "FORCE" on the system.
Answer:
E means energy
M= Mass
C=speed of light squared (the exponent means squared)
The presence of mass makes gravity. Doesn't matter whether it's a planet, a black hole, a puppy, or a speck of dust.
