One fluid ounce is equivalent to 0.0078125 US liquid gallon. How do you write 0.0078125 in scientific notation.

To write the number 0.0078125 in scientific notation, you need to express it as a number between 1 and 10 multiplied by a power of 10.

1. Move the decimal point to the right until you have a number between 1 and 10. In this case, moving the decimal point 3 places to the right gives you 7.8125.

2. Since you moved the decimal point 3 places to the right, you will multiply by \(10^{-3}\) to account for the shift.

Thus, the scientific notation of 0.0078125 is:

\[
7.8125 \times 10^{-3}
\]