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Dmitrij [34]
3 years ago
13

Mixing vinegar and with baking soda produces carbon dioxide and water. Is this a chemical change or a physical change?

Chemistry
2 answers:
marissa [1.9K]3 years ago
6 0
This is a chemical change
Sergeeva-Olga [200]3 years ago
3 0
This is a simple chemical change due to what it produces and how it is added together. Hope this helps.
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Describe the contributions of 3 scientists to our current understanding of the atom
bogdanovich [222]

Answer:

1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.

2. J.J Thomson discovered electrons by conducting cathode ray experiment.

3. Dalton postulated that matter is made up of small particles caled atoms

8 0
3 years ago
One atom of an element possesses 80 protons, 80 electrons, and 121 neutrons. Given this information, what is the atomic mass of
IRINA_888 [86]

Answer:

I think the answer is 4) 41

Explanation:

APE= atomic number, proton and the electrons are the same number

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i haven't done this in a while so hope this helps :)

3 0
2 years ago
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saveliy_v [14]

Answer:

B

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2Na + 2H2O2==NaOh + H2

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