Where does most of the mass of the universe come from? In ordinary matter, most of the mass is contained in atoms, and the majority of the mass of an atom resides in the nucleus, made of protons and neutrons. Protons and neutrons are each made of three quarks.
The coefficient in a chemical formula represents the amount of each chemical present. The amount of a substance is measured in moles.
Answer:
Fluorine is the most corrosive element in the periodic table.
Explanation:
Answer:
Percent composition by element
Element Symbol Atomic Mass
Antimony Sb 121.760
Explanation:
Since the exponent is negative, you move the decimal (2.0) to the left two spots leaving you with .02
