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12-12-2020
Chemistry

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Scientific notation.

Scientific notation class=

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Аноним Аноним

12-12-2020

Answer:

The answer is 2.31×10^12

Explanation:

(4.2×10^9)(5.5×10^2)

(4.2×5.5)×(10^9×10^2)

23.1×10^9+2

23.1×10^11

Answer:2.31×10^12

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