Answer:
They are in a periodic table
Answer:
The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3.
Explanation:
Because the helium inside it is lighter than air , hence it rises up
The balloon from our breath contains carbon dioxide which is heavier than air so it doesn’t rise
Answer:
Net: 1N
Explanation:
1.) Net:1N, direction: left
2.) Net: 1N, direction: down
3.) Net: 0N, no motion
4.) Net: 1N, direction: up
5.) Net: 1N, direction: up
