To express the number 0.0000115741 in scientific notation, you need to move the decimal point to the right to the first non-zero digit.
In this case, you move the decimal point 5 places to the right, which gives you \( 1.15741 \). Since you moved the decimal point 5 places to the right, this is equivalent to multiplying by \( 10^{-5} \).
Thus, the scientific notation for 0.0000115741 is:
\[ 1.15741 \times 10^{-5} \]