Question

how many ml of liquid are in this burette? 20 21 21.6 ml 23.8 ml 20.38 ml

Explanation:

Step1: Identify burette reading principle

Burette readings are taken at the bottom of the meniscus. The scale on the burette increases down - ward.

Step2: Determine the major scale reading

The major scale reading is 20 mL.

Step3: Determine the minor scale reading

Each small division on the burette represents 0.1 mL. There are 3.8 small divisions from the 20 - mL mark to the bottom of the meniscus.

Step4: Calculate the volume

The volume of liquid in the burette is $20+ 0.38=20.38$ mL.

Answer:

20.38 mL