If the Interplanar Spacing of NaCl Is 2

question 12

Multiple Choice

If the interplanar spacing of NaCl is 2.814 × 10−¹⁰ m, what is the predicted angle at which X-rays of wavelength 0.140 nm will be diffracted in a first-order maximum?

• A) 31.3°
• B) 7.20°
• C) 20.5°
• D) 14.4°
• E) 29.8°

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Definitions:

Fear

An emotional response to perceived threats or danger, often resulting in a desire to avoid or confront the source of fear.

Parasympathetic

Pertaining to the part of the autonomic nervous system that conserves energy by slowing down the heart rate and increasing digestive and glandular activity.

Sympathetic

Relating to, or denoting the part of the autonomic nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure or showing feelings of pity and sorrow for someone else's misfortune.

Somatic

Pertaining to or affecting the body, especially as distinct from the mind or the environment.