Answer:
what are the items that have been listed?
Ch h,c c2 that’s all just add them up
Answer:
it's a
Explanation:
<h3> the atomic mass is the number of protons and neutrons in an element added together</h3>
Answer:
The phases of the Moon depend on the moon's position compared to the Earth and the Sun. Remember that the moon revolves around the Earth. As the moon goes around the Earth, half of the moon is always illuminated by the Sun.