Read Each Sentence Below for Meaning

question 24

Multiple Choice

Read each sentence below for meaning. Select the subordinating conjunction that best expresses the relationship between the two ideas.
-___________ Peter's grades improve, he will have to repeat the tenth grade.

• A) After
• B) Unless
• C) If

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Definitions:

Proton Spin Decoupled

A technique in nuclear magnetic resonance (NMR) spectroscopy that simplifies the spectrum by removing interactions between proton spins.

Distinct Quartets

Unique groupings of four elements or signals, often referencing specific patterns in spectroscopy or nuclear magnetic resonance (NMR) studies.

Off-Resonance Decoupled

A technique in NMR spectroscopy used to simplify the spectrum by selectively irradiating and removing the coupling of certain nuclei.

Molecular Formula

A concise way of expressing information about the atoms that constitute a particular chemical compound, using symbols for the elements and numerical subscripts to indicate the quantity of each atom.