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Thepotemich [5.8K]
2 years ago
13

Why do you think nonmetals are used as insulators in thermos bottles?

Chemistry
1 answer:
Rama09 [41]2 years ago
4 0

Answer:

in non-metal elements the electrons are held much more tightly in the chemical bonds that hold the atoms together

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In the experiment "Preparation and Standardization of a Sodium Hydroxide Solution", why was the burette rinsed with NaOH before
FromTheMoon [43]

Answer: The correct option is ALL OF THE ABOVE.

Explanation:

TITRATION is a type of volumetric analysis which is used for determining the concentration of solutions. In this process a specific volume of a solution is placed in a conical flask by means of a pipette and small quantities of a second solution is slowly added from a burette until the end point is reached. This is determined by a means of an indicator which shows a characteristic colour change.

During titration, the following precautions should be followed to avoid errors and maintain standardisation in the experiment.

--> Any air bubble in the burette and pipette must be removed during measurement

--> the burette tap should be tightened to avoid leakage.

--> Remove the funnel from the burette before taking any reading to avoid errors in reading the volume.

--> use the base solution such as Sodium Hydroxide Solution to rinse the burette after washing with soap and tap water:

• to remove any air bubble and fill it's tip

• to remove any residual liquid from the water and soap solution which may interfere with the results of the experiment.

• to check if the burette is in good condition.

Therefore all of the above options to the question are correct.

3 0
2 years ago
What quality is attributed to water due to “capillary action”?
irakobra [83]

Answer:

I think it's B. The ability of water molecules to adhere to the surfaces of objects

4 0
2 years ago
3. Write a hypothesis that explains your inference about the acidity of the paper. How might you test your hypothesis by extendi
vredina [299]

Answer:

google

Explanation:

go to the plus thing on your screen and search it. (please dont attack me im doing a dare  >:( )

8 0
3 years ago
What is an example of a chemical change that takes a long time to occur?
azamat
Rusting  is an example                     
8 0
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A car with a mass of 1,100 kg is moving with a velocity of 30 m/s due east . What is the moment?
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Momentum = (mass) x (velocity) = (1,100) x (30) =

33,000

kg-m/sec due east

6 0
3 years ago
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