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Q.28. A chemistry instructor makes the following claim: "Consider that if the nucleus were the size of a grape, the electrons would be about 1 mile away on average." Is this claim reasonably accurate? Provide mathematical support.

Short Answer

Expert verified

Answer

The claim is reasonably accurate.

Step by step solution

01

Step-by-Step Solution Step 1: Testing the accuracy of claim

The ratio of an atom to nucleus radius can be 10-10m10-15m. The ratio of the radius of the graph is 0.015 m to distance x.

02

Calculating the nucleus radio to the atom

On calculating the ratio of nucleus to atom:

10-10m10-15m=1051

On equation the ratio with graph ratio to distance:

1051=x0.015m

03

Calculating x (distance)

On calculating for x:

x=(105)(0.015m)1x=1500mx=0.932mix>>1mile

The claim is accurate.

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Most popular questions from this chapter

Q.2. Which of the following is true about an individual atom?

a. An individual atom should be considered a solid.

b. An individual atom should be considered a liquid.

c. An individual atom should be considered a gas.

d. The state of the atom depends on which element it is.

e. An individual atom cannot be considered a solid, liquid, or gas.

Justify your choice, and for those you did not choose, explain why they are incorrect.

Section 2.3 describes the postulates of Dalton's atomic theory. With some modifications, thesepostulates hold up very well regarding how we view elements, compounds, and chemicalreactions today. Answer the following questions concerning Dalton's atomic theory and themodifications made today.
a. The atom can be broken down into smaller parts. What are the smaller parts?
b. How are atoms of hydrogen identical to each other, and how can they be different from eachother?
c. How are atoms of hydrogen different from atoms of helium? How can H atoms be similar to Heatoms?
d. How is water different from hydrogen peroxide H2O2even though both compounds arecomposed of only hydrogen and oxygen?
e. What happens in a chemical reaction, and why is mass conserved in a chemical reaction?

Q.27. From the information in this chapter on the mass of the proton, the mass of the electron, and the sizes of the nucleus and the atom, calculate the densities of a hydrogen nucleus and a hydrogen atom.

Q.6. You have a chemical in a sealed glass container filled with air. The setup is sitting on a balance, as shown. The chemical is ignited by means of a magnifying glass focusing sunlight on there actant. After the chemical has completely burned, which of the following is true? Explain your answer.
a. The balance will read less than 250.0 g.
b. The balance will read 250.0 g.
c. The balance will read greater than 250.0 g.
d. Cannot be determined without knowing the identity of the chemical.
250.0g

Complete the following table

Symbol

Number of protons in Nucleus

Number of neutrons in nucleus

Number of electrons

Net charge

U92238

-

-

-

-

-

20

20

-

2+

-

23

28

20

-

Y3989

-

-

-

-

-

35

44

36

-

-

15

16

-

3-

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