Answer :
The equivalent form of mass of a grain of sand is approximately 2.8 × 10⁻¹¹ grams is 2.8 × 10⁻⁸ A) milligrams
What is scientific notation?
In scientific notations numbers are written in the form of a base that is
0 ≤ b < 10 and multiplied by 10ⁿ where n represents integers.
We write large standard numbers in scientific form in a compact manner.
Given, The mass of a grain of sand is approximately 2.8 × 10⁻¹¹ grams.
We know 1 gram is equal to 1000 milligrams.
Therefore, The mass of a grain of sand is approximately 2.8 × 10⁻¹¹ grams
can be written as 2.8 × 10⁻⁸ milligrams as we multiply 1000 to convert to milligrams from grams.
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