One mole of a substance contains 6.02 × 1023 protons and an equal number of electrons. if the protons could somehow be separated from the electrons and placed in very small, individual containers separated by a million meters, what would be the magnitude of the electrostatic force exerted by one box on the other? a) 8.7 × 103 n b) 9.5 × 104 n c) 2.2 × 105 n d) 8.4 × 107 n e) 1.6 × 108 n

Explanation:

The electrostatic force between two objects is given by:

where

k is the Coulomb's constant

q1 and q2 are the charges of the two objects

r is the separation between the two objects

In this problem, we have two boxes separated by

The first box contains protons, so its charge is:

The second box contains electrons, so its charge is:

We are only interested in the magnitude of the force, so we can neglect the negative sign and calculate the electrostatic force as:

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