Certain Planes of a Crystal of Halite Have a Spacing

question 32

Multiple Choice

Certain planes of a crystal of halite have a spacing of 0.399 nm.The crystal is irradiated by a beam of x-rays.First order constructive interference occurs when the beam makes an angle of 20° with the planes of the crystal surface.What is the wavelength of the x-rays?

• A)0.14 nm
• B)0.17 nm
• C)0.21 nm
• D)0.24 nm
• E)0.27 nm

Recognize the importance and function of the general journal.

Identify the components and phases of an accounting system's lifecycle, including system analysis, design, and feedback.

Comprehend how transactions are recorded in the general and specialized journals.

Understand the role of subsidiary ledgers and control accounts in the accounting process.

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Definitions:

Promiscuous Proteins

Proteins that can perform multiple biochemical functions or interact with many different molecules within a cell due to their flexible structure.

Complex Adaptations

Traits that have evolved through many intermediate stages and provide a significant advantage to an organism in a particular environment.

Spinal Canal

The hollow space within the vertebrae through which the spinal cord passes.

Notochord

A notochord is a flexible, rod-shaped structure found in the embryos of all chordates. Notochords served as the first “backbones” in early chordates, and in extant vertebrates the embryonic notochord becomes part of the vertebral column.