Solve.The mass of an electron is approximately 9.11 × 10-28 grams. Find the mass of 306,000,000 electrons.
A. 2.78766 × 10-18 grams
B. 2.78766 × 10-19 grams
C. 2.78766 × 10-17 grams
D. 2.78766 × 10-20 grams
Answer: B
Mathematics
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