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weqwewe [10]
3 years ago
5

the polio virus is 25 nanometers in diameter. How many would fit across the head of a pin 2 millimeters in diameter

Chemistry
2 answers:
IrinaVladis [17]3 years ago
6 0
2mm=2,000,000 nm
2,000,000/25=80,000
The answer is 80,000 polio viruses
const2013 [10]3 years ago
5 0

Answer:

80,000

Explanation:

First, the diameters of both must be in the same unit. Converting the pinhead diameter from millimeter to nanometer, we get:

2mm = 2*10^6 nm

To get the number of polio viruses that fit at the head of the pin, divide the pin size by the amount of virus in nanometers:

2*10^6 = 2,000,000

2,000,000 / 25 = 80,000

This concludes that 80,000 polio viruses fit the pinhead.

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