The nail is made from iron, Fe. When iron combines with Oxygen, Fe2O3 forms. The weight of Fe2O3 is heavier than Fe.
Answer:
The amount of energy lessens
Explanation:
The producer will always have the most energy as it comes directly from the sun and the energy is passed onto each organism as they eat one another. The higher you are the least amount of energy you have! Hope that helps!
Answer:
1. CrCl₃ 2. MnO₂ 3. MgCO₃
Explanation:
For a compound to be neutral, we need the same number of positive charges and negative charges.
1. Cr³⁺ ions and Cl⁻ ions. We will need 1 Cr³⁺ cation and 3 Cl⁻ anions. The chemical formula is CrCl₃.
2. Mn⁴⁺ ions and O²⁻ ions. We will need 1 Mn⁴⁺ cation and 2 O²⁻ anions. The chemical formula is MnO₂.
3. Mg²⁺ ions and CO₃²⁻ ions. We will need 1 Mg²⁺ cation and 1 CO₃²⁻ anion The chemical formula is MgCO₃.
The material of object. The size of object. The surface are of the object