Determining the Mass and Volume of Water
What was the mass of the water you pipetted? The volume? Explain
How can the mass of water pipetted be determined?
How can the volume of water pipetted be calculated?
Why is the density of water reported as 0.998 g/ml?
Answers
The mass of the water pipetted can be determined by weighing the pipette before and after transferring the water.
The volume of water pipetted can be calculated based on the capacity of the pipette.
The density of water is 0.998 g/ml due to factors like impurities and temperature variations.
When determining the mass of the water you pipetted, you can weigh the pipette before and after transferring the water. The difference in weight will correspond to the mass of the water that was pipetted.
To calculate the volume of water you pipetted, you can use the capacity of the pipette. Pipettes are designed to deliver specific volumes, and this information is usually labeled on the pipette itself. By reading the volume indicator on the pipette after transferring water, you can accurately determine the volume.
The density of water is reported as 0.998 g/ml as an average representation under typical conditions. This value takes into account minor variations in water density caused by factors like temperature fluctuations, dissolved gases, minerals, and impurities present in the water.