Answer:
Comets are greater in size than meteoroids
Explanation:
Answer:
hydrogen peroxide is a compound
12 x 10^23 atoms, i hope this helps
In order to balance an equation, we apply the principle of conservation of mass, which states that mass can neither be created nor destroyed. Therefore, the mass of an element before and after a reaction remains constant. Here, the balanced equation becomes:
4Al + 3O₂ → 2Al₂O₃
The coefficients are 4, 3 and 2.