How does the mass of 1 piece one-peso coin compare with the average mass of the coin in 2? What may be the possible cause of the difference in the mass, if there is any?   Mass of 1 piece of one-peso coin 5.3 g           Mass of 5 pieces of one-peso coin           27.5 g Average mass of 1 piece of one-peso coin 5.5 g

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