In 1909, Ernest Rutherford shot tiny particles at a sheet of gold foil. He expected all of the particles to move straight through the gold's atoms. Instead, some of the particles moved through, but other particles bounced back. What conclusion did Rutherford draw from these results?A. An atom is a soft blob of material composed of a mixture of protons and electrons.
B. An atom is entirely solid and has no empty spaces between its particles.
C. An atom has a dense nucleus surrounded by mostly empty space where electrons travel.
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Look at the dots around each symbol and the energy levels from the resources above;Answer the questions in the text entry option for this assignment.Copy and paste questions and respond in complete sentences.Include a space between each question.Be specific with your responses for each question. Assume your reader has no knowledge of the subject and you are teaching them via your answers.Please answer the following questions:Why does Na have only one dot?Why do none of these diagrams show more than 8 dots?What relationship do you notice between the dots in these two charts?The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why? (Hint: Octet Rule (Links to an external site.))
A catalyzed reaction will have a ____ activation energy, and this leads to a _____ in the reaction rate. A) lower, decrease B) lower, increase C) higher, decrease D) higher, increase
what volume of .123 m naoh, in milliliters, contains 25.0 g of naoh? (density of the solution is 1.05 g / ml)
What evidence of a chemical reaction might you see dropping an alka seltzer
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Answer:
Easterly
Explanation:
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Answer: Option (d) is the correct answer.
Explanation:
Atomic number of argon is 18 and its electronic configuration is .
Also, it is known that number of electrons in K, L and M shells of argon are 2, 8, 8.
Thus, we can conclude that an atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has a total of eight valence electrons.
So, as per the octet rule, last sub-shell of argon is completely filled. Hence, it will not form any bond with any other atom.
hope this help
FALSE
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Answer:
True
Explanation:
The boiling point of a liquid is the temperature at which the vapour pressure of the liquid equals the pressure of the surrounding atmosphere.
When a liquid is heated, the vapour pressure gradually increases till it matches the ambient pressure. Gas bubbles begin to form within the liquid, rise to the surface and then burst up to release gas. At this point, we say the liquid is boiling.
The lower the surrounding pressure, the lower the boiling point of a liquid and vice versa. Water boils at lower temperature in high altitudes because of lower pressure as compared to sea level.
Correct option: True.
Which intervals are affected by the addition of a
catalyst?
(1) 1 and 2
(2) 1 and 3
(3) 2 and 4
(4) 3 and 4
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Intervals 1 and 3 are most affected by the addition of catalyst. Option 2 is correct.
What are catalysts?
Catalysts are those compounds that reduce the activation energy for the reaction to occur, hence increasing the rate of reaction.
Activation energy is the energy that is required to start a reaction. Here, 1 represents the activation energy and 3 represents activation energy without catalyst.
Therefore, intervals 1 and 3 are most affected by the addition of catalyst.
Learn more about Catalyst:
Answer: Option (2) is the correct answer.
Explanation:
The minimum amount of energy required by the reactants to undergo a reaction is known as activation energy.
And when we add a catalyst into a reaction then it leads to a decrease in activation energy. As a result, product formation becomes faster.
Therefore, we can conclude that intervals 1 and 3 are affected by the addition of a catalyst.
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Answer:
Synchronous rotation is the result of tidal forces that over time slow the rotation of the smaller body until it is synchronized with its period of revolution around the larger body.
Explanation: