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Answer: option A) Mixtures may be composed of two or more elements, two or more compounds, or a combination of both.
Explanation:
A mixture is a combination of two or more substances mixed together and can be separated by physical methods.
A combination of two elements or compounds will yield chemical compounds NOT a mixture.
Thus, option A is false statement
Answer:planting more trees
Explanation:
Trees go through photosynthesis and uses carbon dioxide (CO2) and changes it to oxygen
<h3><u>Answer;</u></h3>
A. the reactants and the products.
<h3><u>Explanation</u>;</h3>
- The enthalpy of a reaction is the heat released or absorbed by a reaction at constant pressure.
- Enthalpy is important as it tells us the amount of heat energy present in a system. In chemical reactions it tells us the amount of heat energy lost or gained.
- <em><u>Changes in enthalpy are determined as the reactants are converted into products. Therefore, enthalpy depends on the reactants and the products. In other words it depends on the heat of reactants and that of products.</u></em>
