What are some of the body's internal defenses. The skin helps protect stuff to!
Answer: Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
Explanation:
Answer:
The molar mass and molecular weight of Al(CH3CO2)3 is 204.1136.
Explanation:
Answer:
6+9=15
mass number =15
mass number = no. protons + no. of neutrons