Do the calculations, round off your answers to the correct number of significant figures and express the answer in proper exponential notation. A. 2.23 X 10^7 * 3.0 X 10^-4 =

B. 2.21 X 10^7/5.500 X 10^-4 =

C. 2.2 X 10 ^-2 + 3.13 X 10^3 =

D. 7.63 X 10^-2 - 3.15 X 10^-4 =

B?

Explanation:

I'm not sure if i'm suppoed to pick a letter or do the problems. But you can use math apps to help you solve these.

8 carbon atoms forming single bonds with 18 hydrogen atoms; a triple bond exists between the third and fourth carbon atom from the right

explanation:

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