The correct complete equation examples for the conservation of mass law are:
- 4Fe + 3O₂ ⇒ 2Fe₂O₃
- H₂ + Cl₂ ⇒ 2HCl
According to the law of conservation of mass, the mass in a isolate system is neither created nor destroyed but can be transformed from one form to another.
In a chemical reaction the reactants mass must be equal to products mass in an energy thermodynamic process.
Examples:
- The carbon atom can changes from a solid structure to a gas but its mass is not destroyed.
- In the reaction 4Fe + 3O₂ ⇒ 2Fe₂O₃ when the four parts of Iron is oxidized with the 3 parts of oxygen they created a new substance that not only contains the mass of iron but also the mass of oxygen.
- In the reaction H₂ + Cl₂ ⇒ 2HCl when the hydrogen and the chlorine react they created a new substance called Hydrochloric acid.
What is chemistry?
Is the science that study the properties, compositions and structure of the elements and compounds and the ways in which they interact combine and change.
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