3 would be most rocky planets
4 would be true
5 would be closest planet to the sun
6 would be remains that never formed a planet
7 would be planet A orbits faster than planet B
8 would be Saturn
C
The elements are Lithium and Beryllium— just look at the mass number on the periodic table
Answer:
All chemical equations goes to the law of conservation of mass which says that matter can not be destroyed nor created which means there has to be an equal amount of atoms of each element on both sides of the equation. I hope that helps, I'm learning this as well.
