Question

a student is doing a science experiment and needs to measure 2.5 deciliters (dl) of water, but their beaker only has measurements in milliliters (ml). how many milliliters will the student need in order to get 2.5 dl? how can they make sure their measurement is accurate?

Explanation:

Step1: Recall volume unit conversion

1 deciliter (dL) = 100 milliliters (mL)

Step2: Convert 2.5 dL to mL

$2.5 \times 100 = 250$

Step3: List accuracy tips

1. Place beaker on flat surface.
2. Read at meniscus bottom.
3. Use calibrated beaker.

Answer:

The student needs 250 milliliters. To ensure accuracy:

1. Place the beaker on a completely flat, level surface.
2. Read the measurement at the bottom of the liquid's meniscus (curved surface) at eye level.
3. Use a beaker that is properly calibrated and free of cracks or damage.