Answer:
atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
Answer:
a thing that is composed of two or more separate elements ex. Acid and Water
Answer: 0.405g
Explanation:
Molar Mass of Be = 9g/mol
Number of mole of Be = 0.045mol
Mass conc. Of Be = 0.045 x 9 = 0.405g
If it loses an electron, it will become an ion.
I believe it is B... because all balance equation are supposed to follow the law of conservation of mass
