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IceJOKER [234]
3 years ago
8

Two students have been researching the atomic theory in preparation for their chemistry test. Melanie stated that Thomson's disc

overy revolutionized the understanding of an atom more than Rutherford. Josue disagreed with Melanie, he stated Rutherford's discovery revolutionized the understanding of an atom more than Thomson. Which student do you agree with?
Chemistry
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

Josue

Explanation:

J.J Thompson proposed the plum pudding model of the atom. In his proposition, the atom is a sphere of positive charges into which negative charges were embedded. This model of the atom did not significantly contribute to our present day understanding of atomic structure.

On the other hand Ernest Rutherford laid out the foundation for a more accurate understanding of atomic structure in his nuclear model of the atom. According to Rutherford, the atom consists of a positively charged massive core called the nucleus around which electron move in orbits. His idea was akin to the solar system with the sun at it's core and planets moving around the sun in orbits.

This his idea of the nuclear theory was held as fundamentally correct by Neils Bohr's model of the atom. Hence, his nuclear theory of the atom was a significant milestone in our present day understanding of atomic structure.

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A student is given a solution of phenol red of unknown concentration. Solutions of phenol red are bright pink under basic condit
azamat

The  hydrogen ion concentration, [H ], in the solution of phenol red solution of pH 11.20 is 6.3 X 10^{-12} moles/litre.

Explanation:

Data given:

basic solution of phenol red is given as it has pH of 11.2

hydrogen ion concentration = ?

the hydrogen ion concentration is calculated by using the following formula:

pH = -log_{10} [H^{+}]

Rearranging the equation:

[H^{+}]  = \frac{1}{10^{pH} }

Putting the values in the above equation:

[H^{+}] = \frac{1}{10^{11.2} }

[H^{+}] = 6.3 X 10^{-12} moles/litre

The hydrogen ion concentration is very small and the solution of phenol red is basic in nature. The pH of 11.2 also indicates that solution is basic and teh color of the solution is bright pink.

3 0
4 years ago
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vlada-n [284]
The answer is force

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4 0
3 years ago
Write balanced complete ionic equation for the reaction AgNO3(aq)+KCl(aq)→AgCl(s)+KNO3(aq).
Nikitich [7]
AgNO3(aq)  + KCl (aq)----->   AgCl(s) +  KNO3(aq)

Ag ^+(aq)   +  NO3^-(aq)  +  K^+ (aq)  +  cl^- (aq) ---->  AgCl(s)  +  K^+(aq)   +  NO3^-(aq)

net  ionic  equation
  Ag ^+(aq)   +  Cl^-(aq)   ---->  AgCl(s)
3 0
3 years ago
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3 years ago
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Answer:

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Explanation:

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4 years ago
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