Which piece of glassware should never be used for measuring the volume of a liquid but can be used for heating and making solutions?

The most commonly used glasswares in laboratories are beakers, measuring cylinders, volumetric flasks, pipets and buretes.

Among them, the main purpose of using measuring cylinders, volumetric flasks, pipets and buretes is to measure a definite volume of the liquid. Also they are not appropraite for the heating purpose.

On the other hand, beakers are roughly graduated , so can't measure volume accurately. And they are made up of pyrex and thus can be heated.

Therefore, the piece of glassware  that should never be used for measuring the volume of a liquid but can be used for heating and making solutions is  a BEAKER.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.