The mass number of an atom is basically the total number of protons and neutrons.
The Jetliner will travel a total of 1518 meters if flying for 6 hours.
The valence of helium is 0.
Answer:
1. A
2. C
3. B
4. D
5. D
6. B
Explanation:
I'm not quiet sure on 5 but I'm pretty sure its correct
