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5 April, 20:50

Dna is approximately 2.5 nm in length. of an average man is 5 ft 10 in. tall, how many dna molecules could be stacked to extend from the ground to the top of the head of an average man?

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  1. 5 April, 23:30
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    To determine the number of dna molecules that can be stacked as requested in this item, we convert the given measurements in a single unit. For simplicity, we convert all the lengths to meters.

    Length of DNA molecule = (2.5 nm) (1 x 10^-9 m/1 nm) = 2.5 x 10^-9 nm

    Height of a person = (5 ft 10 in) (12 inches / 1ft) (2.54 cm/1 in) (1 x 10^-2 m / 1 cm)

    = 1.778 m

    Then, divide the height of the person by the length of a single DNA molecule.

    n = 1.778 m / (2.5 x 10^-9)

    n = 7.112 x 10^8

    Hence, the number of DNA would be 7.112 x 10^9.
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