You can have a solution of hydrogen peroxide that might say 10% that means that 10% per mass of the hydrogen peroxide solution is the hydrogen peroxide the rest is water.
concentration is the amount of mass in the solution eg 5gdm-3
hope that helps
Answer:
Lens and focal point is the correct answer.
Answer:
D.
The concentration of reactants and the concentration of products are constant.
Explanation:
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C. a change of state. It can be a physical or a chemical state of change.
