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Bezzdna [24]
3 years ago
8

Round off the following measurement to three significant figures. 1.296 g

Chemistry
1 answer:
REY [17]3 years ago
7 0
It would be 1 or 2 because if the number is higher than 5 you need to round up , if its lower than 5 you need to round down.

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When this happens the inward force of gravity is exactly balanced with the outward force created by _______ and _____________.
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Protons are bound together by
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6 0
3 years ago
How’s it possible for liquid to boil at 25 C?
Lera25 [3.4K]

Answer:

Well, not always. It depends on where you're doing the boiling. In fact, water will boil at about 202 degrees in Denver, due to the lower air pressure at such high elevations

Explanation:

4 0
3 years ago
Which of the following is a homogeneous mixture?
Gala2k [10]

Answer:

Water and applesauce are examples of a Homogeneous Mixture

Chicken Noodle Soup and Soil with Water would be examples of a Heterogeneous Mixture.

Explanation:

Homogeneous Mixtures are mixtures that are the same throughout, i.e. it's just one substance. A good example of this is a glass of water, this is because it is all one solution <u><em>without any other visible</em></u><u> </u><u><em>different parts</em></u><em> </em>that will settle if left alone for a while. The same applies to the applesauce, it is one type of a mixture with nothing else added to it.

Hetergeneous Mixtures on the other hand <u><em>are different substances </em></u>added together. The noodles, soup and chicken, three different substances in one mixture. The soil and water mixture also applies, two substances which separate if left alone.  

See http://chemistry.elmhurst.edu/vchembook/106Amixture.html#:~:text=A%20homogeneous%20mixture%20has%20the,gas%2C%20liquid%2C%20and%20solid. For more information.

5 0
3 years ago
CH3
KATRIN_1 [288]

Answer:

A. Neopentane.

B. 2,2-dimethyl-propane.

Explanation:

Hello,

In this case, for the given compound we can spell out two possible names:

A. Neopentane: it is, because the molecule has five carbon atoms wherein there is a central one, bonded to the other four.

B. 2,2-dimethyl-propane: it is, because we find two methyl radicals at the second carbon.

Regards.

8 0
2 years ago
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