Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.
-Assume that the volume of the earth is $5 \times 10^{14}$ cubic meters and the volume of a bacterium is $2.5 \times 10^{-16}$ cubic meters. If the earth could be filled with bacteria, how many would it contain?
A) $2.0 \times 10^{30}$ bacteria
B) $2.0 \times 10^{-30}$ bacteria
C) $5.0 \times 10^{31}$ bacteria
D) $5.0 \times 10^{-31}$ bacteria

Question

Quizplus · Accepted Answer

To find the number of bacteria that can fill the Earth, divide the volume of the Earth by the volume of a bacterium: $5 \times 10^{14} \div 2.5 \times 10^{-16} = 2.0 \times 10^{30}$.

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