A 6.52*10^-4M solution of a compound X has fluorescence intensity of 3.73 at a wavelength of 494nm. What is the concentration of the compound in a solution with fluorescence intensity of 4.85 under identical conditions?

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.

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