Answer :
Final answer:
To find the weight of one pollen grain, divide the weight of the pollen sample by the number of pollen grains. In this case, one pollen grain weighs 0.000008 grams.
Explanation:
To calculate the weight of one pollen grain, we need to divide the total weight of the pollen sample by the number of pollen grains in the sample. In this case, the weight of the pollen sample is 12 grams and it contains 1.5 × 10⁹ pollen grains. So, the weight of one pollen grain can be calculated as:
Weight of one pollen grain = Weight of pollen sample / Number of pollen grains
Putting the values into the formula:
Weight of one pollen grain = 12 grams / 1.5 × 10⁹ = 0.000008 grams
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