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CHEM229 Unit 9 HW#17, Assignments of Organic Chemistry

Santa Ana College Organic Chemistry

CHEM229 Unit 9 HW#17 Ch18 Gibert 2nd ed

Typology: Assignments

2017/2018

Uploaded on 11/10/2023

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Santa Ana College Chemistry 229

Unit #8 (3 of 4) Homework Assignment #17 January 2018

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Name

Chemistry 229 Homework Assignment #17 – Electrochemistry & Metals

Read and outline as directed by your instructor Chapter 18.1-18.5 of Chemistry: An Atoms Focused

Approach, 2nd ed. by Gilbert, Kirss, Foster, & Bretz as directed by your instructor.

Structures of Metals

1. Which unit cell has the greater packing efficiency, simple cubic or body-centered cubic? (18.21)

Alloys

2. The interstitial alloy tungsten carbide (WC) is one of the hardest materials known. It is used on the

tips of cutting tools. Without consulting a table of radii, decide which element you think is the host and

which occupies the holes.

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Download CHEM229 Unit 9 HW#17 and more Assignments Organic Chemistry in PDF only on Docsity!

Unit #8 (3 of 4) Homework Assignment #17 January 2018

Name

Chemistry 229 Homework Assignment #17 – Electrochemistry & Metals

Read and outline as directed by your instructor Chapter 18.1-18.5 of Chemistry: An Atoms Focused Approach , 2nd^ ed. by Gilbert, Kirss, Foster, & Bretz as directed by your instructor.

Structures of Metals

Which unit cell has the greater packing efficiency, simple cubic or body-centered cubic? (18.21)

Alloys

The interstitial alloy tungsten carbide (WC) is one of the hardest materials known. It is used on the tips of cutting tools. Without consulting a table of radii, decide which element you think is the host and which occupies the holes.

Unit #8 (3 of 4) Homework Assignment #17 January 2018

The unit cell of an intermetallic compound consists of a face- centered cube that has an atom of element X at each corner and an atom of element Y at the center of each face. (18.39)

a) What is the formula of the compound?

b) What would be the formula if the positions of the two elements were reversed in the unit cell?

Metallic Bonds and Conduction Band

How does the sea-of-electrons model (Chapter 4) explain the high electrical conductivity of gold? (18.53)
The melting and boiling points of sodium metal are much lower than those of sodium chloride. What does this difference reveal about the relative strengths of metallic bonds and ionic bonds? (18.55)