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Travka [436]
2 years ago
7

Methane is a gas that easily catches fire. This statement is describing a _____.

Chemistry
1 answer:
sweet-ann [11.9K]2 years ago
7 0

Answer:

I believe the answer would be chemical reaction.

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Natalia dipped two feathers in oil. Then she dipped one feather in cold water and the other feather in hot water. She swirled bo
Alika [10]

Answer:

The hot water was better for removing the oil.

Explanation:

You can see that because the mass went down more with the hot water. So, that means that more oil was taken out of the feather with hot water.

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2 years ago
How many protons, neutrons, and electrons could an isotope of this atom contain?
Dmitry_Shevchenko [17]

Answer:

The atomic number on the Periodic Table identifies the number of protons in any atom of that element. Copper, atomic number 29, has 29 protons. Finding the atomic number of an element reveals the number of protons.

To find the number of neutrons in the atom, subtract the atomic number from the atomic mass.

8 0
3 years ago
What evidence supports the law of conservation of energy?
Travka [436]

Answer:

light energy is converted to chemical energy during photosynthesis.

Explanation:

Law of conservation of energy says: Energy can neither be created nor destroyed-only converted from one form of energy to another.

3 0
2 years ago
5. How many atoms of hydrogen are in a molecule of acetic acid (HC2H202)?
Kazeer [188]

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in acetic acid ,there are 4 hydrogen atoms

Explanation:

C H 3 C O O H

3 0
3 years ago
Which one is a true statement about exothermic reactions?
Ugo [173]

the answer is c, more heat is being released.

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