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One grain of spruce pollen weighs about [tex]7 \times 10^{-5}[/tex] grams. How many grains are there in a pound of spruce pollen? (One pound is about 454 grams.) Leave the answer in scientific notation.

Answer :

Final answer:

To find the number of grains in a pound of spruce pollen, we need to convert the weight of one grain to pounds and then divide the weight of a pound by the weight of one grain in pounds. The result is approximately 6.46*10^6 grains per pound of spruce pollen.


Explanation:

To find the number of grains in a pound of spruce pollen, we need to convert the weight of one grain from grams to pounds. Since one pound is about 454 grams, we can divide the weight of one grain (7*10^-5 grams) by 454 to find the weight of one grain in pounds. This gives us (7*10^-5) / 454 pounds per grain.



To find the number of grains in a pound, we divide the weight of a pound (454 grams) by the weight of one grain in pounds. So, the number of grains in a pound of spruce pollen would be 454 / ((7*10^-5) / 454), which simplifies to 6.46*10^6 grains per pound of spruce pollen.


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