0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
When liquid is drawn into a graduated pipette why should the liquid level not to be allowed to fall below the calibration mark?
Allowing the liquid level to fall below the calibration mark can introduce errors in volume measurement. Inaccuracies in volume delivery can occur due to changes in surface tension or meniscus formation. To ensure accurate measurements, it is important to keep the liquid level above the calibration mark when using a graduated pipette.
How do you smoke wee with a pipette?
It is not recommended to smoke weed using a pipette. The proper way to consume weed is by using a smoking device like a pipe, bong, or joint. Using a pipette can be dangerous and is not an efficient or safe method of consumption.
What happens to the final concentration of H2SO4 if there is an air bubble in the pipette?
Using a pipette with air bubbles leads to errors.
What is the meniscus rule used for?
The meniscus rule is used in chemistry to accurately measure the volume of a liquid in a graduated cylinder. It involves reading the bottom of the curved surface of the liquid level to get a more precise measurement.
How do you calculate inaccuracy of an pipette?
To calculate the inaccuracy of a pipette, you would compare the actual volume dispensed by the pipette with the desired volume. This can be done by using a calibrated scale and measuring the difference between the intended volume and the dispensed volume. The inaccuracy can be expressed as a percentage of the intended volume.
You are using a pipette that has a mark every 0.1 mL. If you want to measure 5.15 mL of liquid using this pipette to what level should you fill the pipette?
You should fill the pipette up to the 5.1 mL mark, as this will give you the closest measurement to 5.15 mL using the pipette that has marks every 0.1 mL.
When liquid is drawn into a graduated pipette why should the liquid level not to be allowed to fall below the calibration mark?
Allowing the liquid level to fall below the calibration mark can introduce errors in volume measurement. Inaccuracies in volume delivery can occur due to changes in surface tension or meniscus formation. To ensure accurate measurements, it is important to keep the liquid level above the calibration mark when using a graduated pipette.
How do you smoke wee with a pipette?
It is not recommended to smoke weed using a pipette. The proper way to consume weed is by using a smoking device like a pipe, bong, or joint. Using a pipette can be dangerous and is not an efficient or safe method of consumption.
What the function of the pipette?
The pipette is used to draw up fluids, some like using a straw.
What happens to the final concentration of H2SO4 if there is an air bubble in the pipette?
Using a pipette with air bubbles leads to errors.
Why can sulphuric acid be added with a measuring cylinder instead of a pipette?
Sulfuric acid is highly corrosive, so it can be added using a measuring cylinder because it is more resistant to the acid's corrosive properties compared to a pipette. Using a measuring cylinder allows for easier and more accurate measuring of larger volumes of sulfuric acid compared to a pipette.
When using a graduated cylinder always measure the low spot of the water This is called the?
meniscus
What is the meniscus rule used for?
The meniscus rule is used in chemistry to accurately measure the volume of a liquid in a graduated cylinder. It involves reading the bottom of the curved surface of the liquid level to get a more precise measurement.
How do you calculate inaccuracy of an pipette?
To calculate the inaccuracy of a pipette, you would compare the actual volume dispensed by the pipette with the desired volume. This can be done by using a calibrated scale and measuring the difference between the intended volume and the dispensed volume. The inaccuracy can be expressed as a percentage of the intended volume.
What are the precautions of pipette?
Some precautions when using a pipette include always keeping it clean and properly maintained, avoiding contact of the pipette tip with skin or other substances to prevent contamination, and ensuring proper calibration and technique to ensure accurate measurements. Additionally, always follow the manufacturer's instructions and handle the pipette with care to prevent damage.
Why is it important to calibrate a pipette prior to it being used to make up standard solution?
Pipettes are used to move specific volumes of fluid between containers. For very small volumes, or very precise applications, a large error in the desired fluid volume can have a very large impact. Calibrating a pipette ensures that the volume desired is the volume collected. Proper sealing of pipette tips can also have a large impact on fluid volumes collected.
Why do we use the lower meniscus to read the clear liquid and upper meniscus to read the colored liquid?
The meniscus is affected by surface tension, causing it to curve either downward or upward in a liquid. When reading a clear liquid, the lower meniscus can help reduce parallax error and provide a more accurate measurement. For colored liquids, using the upper meniscus is more practical as the color layer is easier to discern at the top surface.
