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quiz 2

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Magnesium has 12 protons. How many electrons are in its second energy level? a. 2 b. 4 c. 6 d. 8 e.10 Which of the following statements correctly describes any chemical reaction that has reached equilibrium? a. The concentration of products equals the concentration of reactants. b. Both forward and reverse reactions have halted. c. The rate of the forward reaction equals the rate of the reverse reaction. d. The reaction is now irreversible e. No reactants remain.

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