What is the total number of carbon atoms in a molecule of ethanoic acid? (1) 1 (3) 3(2) 2 (4) 4

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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