2. In the appropriate space after each equation, write the formulas for the oxidant and reductant, and indicate the number of electrons lost per formula from the reductant and the number of electrons gained per formula by the oxidant. When there is no redox occurring, indicate this by writing "no redox" Electrons Electrons gained per lost per Oxidant formula Reductant formula Ag + Cl AgCl Mg + 2H Mg2 H2 Ba + 2H20 Ba2 20H + H2 CO2 + H20 → H2CO3 CO2 C2CO 2H202 2H20+ 02 137

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.