Answer:
When water is added to a graduated cylinder, having a surface where the sides of the water look higher than the center means that the curved surface is a concave meniscus which has formed because of surface tension (Choice C).
Explanation:
A meniscus is simply the curvature that the surface of a liquid acquires when it is in a container, such as a graduated cylinder. It is concave when there is attraction between molecules -water and glass- or it can be convex when both surfaces are repelled.
<u>Water is a polar molecule</u>, with the capacity to adhere to the surfaces it comes into contact with. This characteristic causes it to form a concave meniscus, as the outermost molecules adhere to the glass surface, while the surface tension of the water attracts the molecules from the centre downwards, causing the concavity.
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Measuring with a graduated cylinder brainly.com/question/4070509
Answer:
B. Marine
Explanation:
There are still things we don't know the ocean
Answer:
The instruments that is being used to care for the instrumentation and supplies that have been exposed to the inside of intestinal tract are kept aside from the other sterile instruments.
The instruments are kept aside to protect the other instruments from being contaminated by it.
The instruments needs to be sterile as it cannot be replaced again and again for every technique that is being carried out in patients.
So, the instrument that is used once are kept separated.
