A laboratory experiment requires 250 millimeters of water for boiling. It also requires 100 millimeters of water for a cooling process.

1.05 L

Explanation:

There is some info missing I think this is the original question.

A laboratory experiment requires 250 millimeters of water boiling. it also requires 100 mills of water for a cooling process. If a student performs the experiment three times, how much total water will the student need? Give your answer in liters.

Step 1: Calculate the volume required for each experiment.

The volume required is the sum of the volumes used: 250 mL + 100 mL = 350 mL

Step 2: Calculate the volume required for the 3 experiments

We have to multiply the volume required for each experiment by 3.

3 × 350 mL = 1050 mL

Step 3: Convert the volume to liters

We use the relation 1 L = 1000 mL.

1050 mL × (1 L/1000 mL) = 1.05 L