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photoshop1234 [79]
3 years ago
6

Which of the following describes the Bohr atomic model?

Chemistry
2 answers:
bekas [8.4K]3 years ago
7 0
In Bohr's atomic model, an atom consist of a nucleus that is positively charged and is being surrounded by electrons that are said to travel in orbits or circular manner around. It is compared to the solar system where the nucleus is equivalent to the sun and the electrons are the planets.
BabaBlast [244]3 years ago
3 0

Answer:

The nucleus contains protons and neutrons and is orbited by electrons

Explanation:

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Write down your understanding of plate tectonics.
anygoal [31]

Answer:

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

Explanation:

5 0
2 years ago
Which statement best describes what happens during a chemical change?
shutvik [7]
I think the best answer that will describe chemical change is the first option. During a chemical change, b<span>oth the identity and the properties of a substance change because new substances are being formed by a chemical reaction. An example is rusting of steel</span>
4 0
3 years ago
Read 2 more answers
Element 2 is:<br> A) Cobalt<br> B)Chlorine <br> C)Calcium<br> D)Carbon
saul85 [17]

Answer:

D: Carbon

Explanation:

Carbon is the sixth element with a total of 6 electrons in the periodic table. Hence the atomic number Z = 6. The ground state electron configuration of carbon is 1s2 2s2 2p2. An excited state electron configuration of carbon is 1s2 2s1 2p3.

4 0
3 years ago
An ore is to be analyzed for its iron content by an oxidation-reduction titration with permanganate ion. A 4.230 g sample of the
Leya [2.2K]

Answer:

See explanation

Explanation:

The balanced redox reaction equation is;

8H+ + MnO4^- + 5Fe2+ ---------> Mn2+ + 5Fe3+ + 4H2O

Amount of KMnO4 reacted = 31.60/1000 * 0.05120 = 1.62 * 10^-3 moles

From the reaction equation;

1 mole of MnO4^- reacted with 5 moles of Fe2+

1.62 * 10^-3 moles will react with 1.62 * 10^-3 moles * 5/1 = 8.1 * 10^-3 moles

Mass of Fe2+ reacted = 8.1 * 10^-3 moles  *  56 g/mol

Mass of Fe2+ reacted = 0.45 g

Amount of iron in the sample =  0.45 g

Percentage of iron in the sample;

0.45 g/4.230 g  * 100 = 10.6 %

8 0
2 years ago
What is the oh of a solution with a ph of 9.8
Veseljchak [2.6K]
It would be 4.2, hope this helps.
4 0
3 years ago
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