cylinder, burette, pipette, etc. A volumetric flask is used to prepare a known volume of a solution. These measuring devices are shown in Fig. .
. Fig. . Some volume measuring devices .
Uncertainty in Measurement Many a time in the study of chemistry, one has to deal with experimental data as well as theoretical calculations. There are meaningful ways to handle the numbers conveniently and fahrenheit) and K (kelvin). Here, K is the SI unit. The thermometers based on these scales are shown in Fig.
. . Generally, the thermometer with celsius scale are calibrated from ° to °, where these two temperatures are the freezing point and the boiling point of water, respectively. The fahrenheit scale is represented between ° to °.
The temperatures on two scales are related to each other by the following relationship: