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Why is it important to keep the graduated cylender on a flat surface when reading the meniscus?
Wiki User
∙ 11y ago
it is important to keep the graduated cylinder on a flat surface when reading the meniscus so that your groogies dont escape and so that the results are good
Wiki User
∙ 11y ago
Anonymous
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When reading the volume of a liquid in the graduated cylinder or you must read from the bottom of the?
You must read from the bottom of the meniscus. In a narrow, graduated glass cylinder, water has a slightly domed surface, with the centre being higher than the side, so giving a false reading if the centre height is taken.
When reading a scale of water do you read of the tip of the water or the bottom curve?
In a graduated cylinder, the water or liquid will tend to pull its surface up the side just a bit. This curved shape is call the meniscus. You should read the level at the lowest point of the meniscus, in the center. Turn the cylinder so that the markings are toward you, so you can see the low point of the meniscus behind the markings to get your measurement. There are a few liquids which want to pull away from the edges, which will thus have an inverted meniscus. For these, you would read the high point.
What is a graduated cylinder used for in science?
A graduated cylinder is a piece of laboratory glassware used to accurately measure out volumes of chemicals for use in reactions. They are generally more accurate and precise for this purpose than beakers or erlenmeyer flasks, although not as precise as a volumetric flask or volumetric pipet. They come in a variety of sizes for different volumes, typically 10 mL, 25 mL, 50 mL, or 100 mL and up to as large as 1 or 2 liters.Determine the volume contained in a graduated cylinder by reading the bottom of the meniscus at eye level.In other words, holding the graduated cylinder at eye level, the bottom of the curved surface of the liquid (called the meniscus) is where you read off the mark on the graduated cylinder to determine the volume properly.
How do you avoid parallax error when taking a meniscus reading?
By keeping Ur eyes perpendicular to the vernier and main scale while taking the measurement.
Why should the graduated cylinder be cleaned and rinsed after measuring out each solution?
If you are going to measure out a different solution, you must rinse and drain well to avoid contaminating one substance with another. If you are using the same solution, there is no need to rinse, and in fact it is better not to do so, because the rinsings will dilute the next batch.
When reading a graduated cylinder you look at?
When you read a scale on the side of a container with a meniscus, such as a graduated cylinder or volumetric flask, it's important that the measurement accounts for the ... For mercury, take the measurement from the top of the meniscus. ...
When reading the volume of a liquid in the graduated cylinder or you must read from the bottom of the?
You must read from the bottom of the meniscus. In a narrow, graduated glass cylinder, water has a slightly domed surface, with the centre being higher than the side, so giving a false reading if the centre height is taken.
When reading the volume of fluid in a graduated cylinder the eye should be .?
Level with the bottom of the fluid's meniscus
Are correct procedures for reading the volume of water in the graduated cylinder?
Water in a glass graduated cylinder adheres to the sides of the cylinder, forming a meniscus which is an upward curve. When reading volume in a cylinder, look at the meniscus at eye level. Read the volume at the bottom of the curve.
What is the uses of graduated cylender?
They provide a quick and relatively precise reading of liquid volume, they are also useful for water displacement readings.
What are the rules for reading a graduated cylinder?
Read volume from the bottom of the meniscus (the crescent shaped pattern that many liquids form.)
Reading the volume of liquid inside the graduated cylinder?
Always read from the bottom of the meniscus (where the liquid reaches up the side of the container).
Why should you measure a liquid at the bottom of the meniscus?
The liquid molecules are more strongly attracted to the graduated cylinder than to each other. This causes the liquid to rise up on the sides of the graduated cylinder. Therefore it is important to read the line, even with the center of the meniscus, and at the bottom of the meniscus to accurately measure the volume of a liquid in the graduated cylinder. If you are still a bit confused I also found some information at this website: http://chemistry.about.com/od/chemistrylabexperiments/qt/meniscus.htm
What is the the bottom of a curved line in a graduated cylinder?
The "bottom of a curved line" made by the liquid in a graduated cylinder could be called the "measuring line" or "reference line" in the application of that piece of labratory equipment. The curved surface of the liquid itself is called the meniscus, and we look to the bottom of the meniscus to make our reading as to the volume of the liquid in the graduated cylinder. The liquid in the cylinder "grabs" the sides of the cylinder and "pulls itself up" just a bit, and that creates the curve in the surface of the liquid. And that curve, the meniscus (which is from the Greek word for crescent), leaves us with a problem: where do we "read" the volume marked off by the graduations along the side of the cylinder? And the answer is, "At the bottom of the meniscus."
Which meniscus of acid hematin is considered for taking reading?
lower meniscus of acid hematin is considered while taking reading
Why do we use the lower meniscus to read the clear liquid and upper meniscus to read the colored liquid?
If the colored liquid is opaque (you can't see through it) you can't see the bottom of the meniscus. If the liquid is like mercury, you can't see through it but it doesn't make any difference because the meniscus is reverse from that of water. You read the top.
What must be read very carfully when reading a liquid in a graduated cylinder?
the meniscus (the curved part of the liquid). For some liquids the meniscus is curved up so you read the bottom (assuming you can see through it to see the bottom), for some liquids it curves down so you read the top.
