The radius of a copper atom is 128 pm. how many copper atoms would have to be laid side by side to span a distance of 4.65 mm?

The distance covered by each atom of copper will be twice the radius of each atom, which is its diameter

it will be like as shown in diagram....

Let the number of atoms required is "n"

thus total atoms required will be

Let us convert pm to mm for unit cancellation.

Thus

hence

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.