Which of the Following Statements Is TRUE

question 76

Multiple Choice

Which of the following statements is TRUE?

• A) A common reference compound for ¹H and ¹³C NMR is tetramethylmethane.
• B) Nuclear magnetic resonance spectroscopy uses the fact that some atomic nuclei, such as ¹H and ¹³C, have two nuclear spin states with different energies under an applied magnetic field.
• C) The energy difference between two nuclear spin states corresponds to the energy of photons in the microwave part of the electromagnetic spectrum.
• D) The energy difference between two nuclear spin states depends on the number of protons and neutrons in the atomic nucleus.
• E) The difference in absorption frequency of a nucleus outside the magnetic field and a nucleus inside the external magnetic field is called the chemical shift.

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Definitions:

Bone Resorption

The process by which osteoclasts break down bone tissue, releasing minerals into the blood and leading to a decrease in bone density.

Inferior Good

A good that has a negative income effect.

Goods

Physical items that satisfy human wants or needs and can be transferred or sold.

Price-Consumption Curve

Curve tracing the utility-maximizing combinations of two goods as the price of one changes.