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Hunter-Best [27]
3 years ago
8

• How many neutrons does the isotope gold-148 have.

Chemistry
1 answer:
Butoxors [25]3 years ago
4 0
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Which of the following provided evidence that most of the mass of the atom, as well as all of the positive charge, is concentrat
gayaneshka [121]

Answer:

5. the scattering of α particles by a metal foil

Explanation:

This is the classical Rutherford's experiment in which he bombarded a thin foil of gold with alpha particles which are positively charged helium nucleus.

He did observed that most of the particles passed through the foil relatively undeflected or if they were deflected it was by a very small angle.

Once in a while the alpha particle rebounded completely. An analogy is the one typically mentioned that it was as if we throw a ball at a piece of paper and it rebounds toward us.

This observations led Rutherford to conclude that the nucleus of the atom is  very small positely charged and  that the  atom is relatively empty  with electrons of very small masses. His model is referred as the Plum Pudding model and later Bohr modified it to the planetary model.

4 0
4 years ago
Which of the following correctly describes a mixture? (4 points) Group of answer choices The particles are chemically bonded tog
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Answer:

The particles have no set ratio for how to combine, and they can be separated by physical means.

Explanation:

5 0
3 years ago
In which pair would both compounds have the same empirical formula? A. H2O and H2O2 B. BaSO4 and BaSO3 C. FeO and Fe2O3 D. C6H12
Dmitriy789 [7]
"C6H12O6 and HC2H3O2" is the one pair among the following choices given in the question in which both <span>compounds have the same empirical formula. The correct option among all the options that are given in the question is the fourth option or option "D". I hope the answer has come to your great help.</span>
8 0
3 years ago
5. Which mineral listed below is commonly known as "fools gold"?
olya-2409 [2.1K]

Answer:

b. pyrite

Explanation:

4 0
3 years ago
Does xenon react with nitrogen and explain why
KiRa [710]
No, xenon will not react on Nitrogen because xenon only reacts with oxygen and fluorine. Xenon only reacts with the 2 elements because these 2 elements contain a strong electronegative element which is high in energy barrier that can move the electrons inside xenon elements.  Xenon is an element with a symbol of Xe, it is odorless and colorless gas. Common uses of xenon are flash lamps and arc lamps. Xenon is a luminous element, it glows when placed near to high voltage electric field.
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3 years ago
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