1. Move the decimal point:

Start with 0.0028 and move the decimal point to the right until you have a number between 1 and 10. You'll need to move it three places to the right to get 2.8.

2. Determine the exponent:

Since you moved the decimal point three places to the right, the exponent is -3.

3. Write the answer:

The scientific notation is 2.8 x 10^-3 L