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uysha [10]
2 years ago
9

SOMEONE PLEASE HELP HURRY

Chemistry
1 answer:
melomori [17]2 years ago
4 0

I think the answer is A. I know it's Planet X.

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How does the appearance of a substance change when it<br> changes phase?
kicyunya [14]

Answer:

Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.

Explanation:

6 0
3 years ago
Which of the following is a strong acid?
4vir4ik [10]

H2SO4 is referred to as a strong acid and is denoted as option A.

<h3>What is an Acid?</h3>

This refers to any substance which tastes sour when in water and changes the color of blue litmus paper to red. It is usually very corrosive and are used in industries for different functions.

H2SO4 is referred to as a strong acid because it dissociates completely in its aqueous solution or water.

Read more about Acid here brainly.com/question/25148363

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2 years ago
The hindbrain includes the:
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The answer is B mark me as Brainliest while your at it
4 0
3 years ago
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What is the electron configuration for helium (He)?
givi [52]
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The electron configuration for helium is 1s2
3 0
3 years ago
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3.0 x 108 m/s is the
Veseljchak [2.6K]

Answer:

Speed of light

Explanation:

The value 3.0 x 10⁸m/s is taken as the speed of light.

It is a constant.

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  • The speed of electromagnetic radiations in free space is also taken as the speed of light.
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