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TiliK225 [7]
3 years ago
12

Which of the following most likely happens during a physical change?

Chemistry
2 answers:
Svetlanka [38]3 years ago
4 0

Answer:

A. New atoms are introduced in the molecules of the substance.

Explanation:

Pls, Pls, Pls can I have brainliest? I need 1 more brainliest to lvl up to expert

lutik1710 [3]3 years ago
3 0


a) New atoms are introduced in the molecules of the substance.
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What is the charge on an atom after it gains two electrons during the formation of a bond?
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Precision Problems:
Lorico [155]

Answer:

Precision = 2.70 \± 0.1\ cm

Explanation:

Given

The data in the table

Required

Follow the steps appended to the question;

Step 1: Calculate the Mean or Average

Mean = Summation of lengths divided by number of teams;

Mean = \frac{2.65 + 2.75 + 2.80 + 2.77 + 2.60 + 2.65 + 2.68}{7}\ cm

Mean = \frac{18.9}{7}\ cm

Mean = 2.70\ cm

Step 2: Get The Range

Range = Highest - Lowest

Range = 2.80cm - 2.60cm

Range = 0.2\ cm

Step 3: Divide Range by 2

Approximate\ Range = \frac{1}{2}Range

Approximate\ Range = \frac{1}{2} * 0.2\ cm

Approximate\ Range = 0.1\ cm

Step 4: Determine the Precision

Precision = Average \± Approximate\ Range

Substitute 2.70 for Average and 0.1 for Approximate Range

Precision = 2.70 \± 0.1\ cm

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3 years ago
How are volcanic mountains formed?
astra-53 [7]

Answer:

Volcanic mountains form as lava oozes forth from cracks in the earth. The lava builds up around the area where the eruption occurred. Layers build upon layers and over a period of time, a volcanic mountain forms. There are several ways that volcanic mountains are formed. Shield volcanoes, which are very wide with a gentle slope, are formed by long periods of eruption with low-viscosity lava.

Explanation: Hoped this helped! :)

5 0
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Strong acids have a higher PH while weaker acids have a lower PH

I'm other words, acidic bases have a higher PH whilst less acidic bases have lower PH
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