Question: Balance these redox reactions by the half reaction method. a. Ca + H+ ( Ca2+ + H2 b. Sn2+ ( Sn + Sn4+ (Hint: both

Balance these redox reactions by the half reaction method.
a. Ca + H+ ( Ca2+ + H2
b. Sn2+ ( Sn + Sn4+ (Hint: both half reactions will start with the same reactant.)

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