In a galvanic cell, a spontaneous redox reaction occurs. however, the reactants are separated such that the transfer of electrons is forced to occur across a wire. the resulting cell potential is measured in volts (v) and is defined by the equation given below:

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a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.