Which atomic model was proposed as a result of J. J. Thomson’s work? the plum pudding model the indivisible atom model an atom that had a lot of empty space an atom that had a concentrated nucleus
Answers
J. J. Thomson worked in the field of chemistry and proposed the atomic model theory after the discovery of the electron. He proposed the plum pudding model. Thus, option A is correct.
What is the plum pudding model of the atom?
The plum pudding model of the atom was proposed by J.J. Thomson, after the discovery of electrons. The “plum pudding” atomic model was based on the plum cake structure where the sub-atomic particles were placed.
According to the model, the electrons being negative species were embedded as the cherries in the structure, while the protons being positive in charge were freely present in the rest of the pudding.
Therefore, Thomson proposed the “plum-pudding” atomic model.
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Answer:
the plum pudding model
Explanation:
Related Questions
A molecule has two atoms that are bonded to the central atom and one lone pair of electrons around this central atom. What is the shape of the molecule?bentlineartrigonal planartrigonal pyramidal
Calculate the mass percent composition of sulfur in Al2(SO4)3.
Sketch the structure of an atom according to the Plum Pudding and Nuclear Atomic Models. Label the subatomic particles in each sketch and list the key points associated with each model.
Based on relative bond strengths, classify these reactions as endothermic or exothermic.
Record the results of each of your physical property tests in the table below.
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10)
Magnetism
(number of paper clips)
Thermal Conductivity
(W/(m·K))
Electrical Conductivity
(x107 S/m)
Mass (g) 10g 10g 10g 10g 10g 10g
Volume (cm3)
Formula:
L x W x H
Density
(g/cm3)
Formula:
D=M/V
Answers
The exercise is to measure and record the Physical properties of materials, such as flexibility, magnetism, thermal conductivity, electrical conductivity and density. Magnetism and flexibility can be observed directly, while density, thermal conductivity, and electrical conductivity require calculations.
The student is asked to measure and record the physical properties of various materials.
Flexibility can be rated subjectively on a scale of 1-10, with 10 being most flexible.
Magnetism can be tested by seeing how many paper clips each material can hold.
Thermal Conductivity (W/(m·K)) is a measure of a material's ability to conduct heat, while Electrical Conductivity (x107 S/m) measures the material's ability to conduct electricity.
For density, you need the mass (M) and volume (V) of the material.
The mass is given as 10g for all materials. You have to measure the volume (V) using the formula length x width x height (L x W x H).
Then plug M and V into the density formula D=M/V to get the density in g/cm3. Keep in mind that each material will have different properties.
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Answers
Answer:
The correct answer is option C.
Explanation:
The radioisotopes in the Earth's interior are not in pure form and exhibit various entrenched impurities and are interspersed. Thus, when a neutron is discharged by a decaying atom, its occurrences of hitting another atom of radioisotope in order to continue the chain reaction becomes lower in comparison to the man-made nuclear reactor. In this manner, the radioactive chain reaction in the interior of the Earth is not well-sustained.
Answer: C
Explanation:
Atoms that undergo fission aren’t concentrated enough to sustain a chain reaction.
Answers
Answer : The molarity of solution is, 0.0145 mole/L
Solution : Given,
Mass of solute, Na= 0.50 g
Volume of solution = 1.5 L
Molar mass of Na= 23 g/mole
Molarity : It is defined as the number of moles of solute present in the one liter of solution.
Formula used :
where,
= mass of solute, Na
V = volume of solution in liters
= molar mass of solute, Na
Now put all the given values in the above formula, we get the molarity of a solution.
Therefore, the molarity of solution is, 0.0145 mole/L
1 mole Na ------- 23.0 g
? mole Na ------ 0.50 g
moles = 0.50 * 1 / 23.0
moles = 0.50 / 23.0
= 0.0217 moles of Na
Molarity = number of moles / liters solution
M = 0.0217 / 1.5
= 0.014467 M
hope this helps!
Answers
Answers
Answer:
A cup of boiling water.
Explanation:
Due to their mobility, particles in a substance contain kinetic energy. The average kinetic energy of the particles increases with temperature.
Since hot water has the highest temperature of the available possibilities in this situation, it has the highest average kinetic energy. Compared to particles in icy water, warm water, or room temperature water, those in hot water are moving more quickly and possess more energy.
For instance, when hot water is compared to frozen water, the particles in the hot water are moving more quickly due to the higher temperature. The lower temperature of ice water causes the particles to move more slowly. A difference in average kinetic energy results from this difference in velocity.
O B. Ribose
O C. Starch
O D. Fructose
O E. Galactose
Answers
Starch is a carbohydrate which is a polysaccharide and not a simple sugar like glucose, fructose,etc.
What are carbohydrates?
A carbohydrate is defined as a bio-molecule which consists of carbon,hydrogen and oxygen atoms which are usually in the ratio of 2:1 with the empirical formula C(H₂O)
.
This term is most commonly used in biochemistry as a synonym of saccharide which is a group of sugars, starch and cellulose.
They perform various functions in living organisms. They serve as an energy source and as well as structural components . They are a key component in providing nutrition and are found in wide variety of natural as well as processed foods.
Carbohydrates occur as cellulose in the cell walls of plants and is one of the components of insoluble dietary fibers.
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Answer:
C
Explanation:
The polysaccharide is starch which contains many glucose molecules.
The rest are either monosaccharide or disaccharides.