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kap26 [50]
3 years ago
13

Which atomic model was proposed as a result of J. J. Thomson’s work?

Chemistry
2 answers:
lesya692 [45]3 years ago
4 0
The answer would be A) The plum pudding model.
victus00 [196]3 years ago
4 0

Answer: Option (a) is the correct answer.

Explanation:

J.J. Thomson is a renowned scientist who discovered the model of atom which is known as the plum pudding model.

Through this model Thomson stated that an atom consists of small particles. These small particles are positive and negative charges present inside an atom.

Whereas Democritus stated that an atom is indivisible and thus he proposed the indivisible atom model.

Ernest Rutherford discovered that an atom has lot of empty space and this space is nucleus. As he stated that positively charged particles are known as protons which are present inside a nucleus.

Rutherford's gold foil experiment discovered that an atom has nucleus in which most of the mass of an atom is concentrated.

Thus, we can conclude that the plum pudding model was proposed as a result of J. J. Thomson’s work.

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How many moles of hydrogen are in the sample?<br> Round your answer to 4 significant digits.
finlep [7]

Answer:

1.56 mol H₂

Explanation:

Mg₃(Si₂O₅)₂(OH)₂

<em>There are 4 Si moles per Mg₃(Si₂O₅)₂(OH)₂ mol</em>. With that in mind we can <u>calculate how many Mg₃(Si₂O₅)₂(OH)₂ moles are there in the sample</u>, using the <em>given number of silicon moles</em>:

  • 3.120 mol Si * \frac{1molMg_3(Si_2O_5)_2(OH)_2}{4molSi} = 0.78 mol Mg₃(Si₂O₅)₂(OH)₂

Then we can <u>convert Mg₃(Si₂O₅)₂(OH)₂ moles into hydrogen moles</u>, keeping in mind that <em>there are 2 hydrogen moles per Mg₃(Si₂O₅)₂(OH)₂ mol</em>:

  • 0.78 mol Mg₃(Si₂O₅)₂(OH)₂ * 2 = 1.56 mol H₂
8 0
3 years ago
Use the image to answer the question.
Lena [83]

Answer:

1. the process of plants taking in sunlight and creating oxygen

2. outputs are oxygen

3. inputs are sunlight

Explanation:

7 0
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9. Which of Earth’s sphere consists of all living things? A. hydrosphere B. geosphere C. biosphere
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i took it

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Which two parts of the atom are found in nucleus?
faust18 [17]

Answer:

protons and neutrons are found in nucleus

6 0
3 years ago
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Can someone fill this out pleaseee for me
Ganezh [65]

Filling out the table below following the outlined order:

  • Calcium - symbol = Ca; Group =2; Period = 4; Ar = 134; Am =40.078u; Ph = solid; Density = 1.55; Bp = 1757K; Mp = 1115K.
  • Vanadium - symbol = V; Group =5; Period = 4; Ar = 197; Am =50.9415u; Ph = solid; Density = 6.11; Bp = 3680K; Mp = 2183K.
  • Manganese - symbol = Mn; Group =7; Period = 4; Ar = 127; Am = 54.938044u; Ph = solid; Density = 7.21; Bp = 2334K; Mp = 1519K.
  • Cobalt: - symbol = Co; Group =9; Period = 4; Ar = 125; Am =58.933195 u; Ph = solid; Density = 8.90; Bp = 3200K; Mp = 1768K.
  • Zinc: - symbol = Zn; Group = 12; Period = 4; Ar = 134; Am =65.38 u; Ph = solid; Density = 7.14; Bp = 1180K; Mp = 692.68K.
  • Arsenic: - symbol = As; Group = 15; Period = 4; Ar = 197; Am = 74.9216 u; Ph = solid; Density = 5.75; Bp = 889K; Mp = 889K.
  • Bromine: - symbol = Br; Group =17; Period = 4; Ar = 120; Am = 79.904 u; Ph = Liquid; Density = 3.1028; Bp = 332K; Mp = 265K.

<h3>Meaning of Element</h3>

An element can be defined as a substance that can not be broken down into simpler substances.

An element serves as a building blocks for compounds and mixtures.

In conclusion, each element and its property as requested in the table are given above.

Learn more about element : brainly.com/question/18096867

#SPJ1

5 0
1 year ago
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