Answer:
D Contains most of the total mass
Explanation:
The mass of an atom is protons + neutrons (both found in nucleus)
Explanation:
the answer and explanation is in the picture
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Answer:
2800 torr
Explanation:
- Use Boyle's law
- Rearrange formula to fit problem
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D.
Blue litmus paper turns red when placed in a base.
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.