the following equation does not demonstrate the law of conservation of mass. How can it be changed so that the equation does demonstrate this law
One possible example of an equation that does not demonstrate the law of conservation of mass is:
2H2 + O2 -> 2H2O
To change this equation so that it demonstrates the law of conservation of mass, we can balance the equation by ensuring that the number of atoms of each element in the reactants is equal to the number of atoms of each element in the products.
The balanced equation would be:
2H2 + O2 -> 2H2O
This balanced equation demonstrates the law of conservation of mass, as the number of hydrogen and oxygen atoms is the same on both sides of the equation.