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Solve the following questions given below:

Question 1: Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 7.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole.

Question 2: Electrons are added to the pin until the net negative charge is 2.00 mC. How many electrons are added for every 109 electrons already present?

Explain how you came up the prefixes and answer please.

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