SAT Boundaries Question

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Question 1 · Hard · Reading and WritingNovember 2025 Batch 3 · Q21Boundaries · 0 solved

In a chemical equation, the value known as molar mass is useful for converting between the mass of the reactants and the mass of the product. The liquid have molar masses of 186.06 and 156.31 g/mol, respectively. Which choice completes the text so that it conforms to the conventions of Standard English?

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Strategy

When a sentence begins with a general noun phrase and then names specific examples, check how the examples attach to the noun. You want punctuation that matches the grammatical role of each part: commas for lists or parentheticals, but no punctuation that breaks a noun phrase apart incorrectly.

Hints (open one at a time)

Hint 1

Read the sentence up to the blank and ask what kind of phrase must come next: a label, a list, or a complete clause?

Hint 2

Check whether the punctuation after the noun helps the sentence flow or creates an unnecessary break before the examples.

Hint 3

Choose the option that keeps the two chemical names attached to the noun phrase without inserting a comma where it would split the sentence incorrectly.

Step-by-step Explanation

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