Answer: 6.79×10^-5
Explanation:
In order to write the given value in scientific notation, we have to bring the decimal point after the first non-zero digit.
So it will become 6.79
Now for the zeros that have been removed we represent them in the form 10^-5.
And it is -5 because we have removed the zeros from the left side of the value. The 10^-5 indicates that we have to move "five points" to the "left side" to get the original value again.
So it is first, 0.0000679
(we make the decimal point jump across four zeros to the right side and then across the 6 which is the first non zero digit, that is 5 jumps in total as indicated by the 10^-5)
Then it becomes:
6.79×10^-5