High School

The mass of a grain of sand is approximately [tex]2.8 \times 10^{-11}[/tex] grams. The mass of a grain of sand is approximately [tex]2.8 \times 10^{-8}[/tex]

A. Milligram
B. Gram
C. Kilogram

Answer :

Final answer:

The mass of a grain of sand is approximately 2.8×10⁻⁸ milligrams

Explanation:

The mass of a grain of sand is approximately 2.8×10⁻¹¹ grams. To convert this into a more familiar unit, we can use the metric system prefixes. 1 gram is equal to 1000 milligrams, so 2.8×10⁻¹¹ grams would be equal to:

2.8×10⁻¹¹ grams × 1000 milligrams/1 gram = 2.8×10⁻⁸ milligrams

Therefore, the mass of a grain of sand is approximately 2.8×10⁻⁸ milligrams, which is represented by option A - Milligram.

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