Question detail

What mass of sodium chloride (NaCl) is produced from 2 moles of Na reacting with excess chlorine gas? The relative formula mass (Mr) of NaCl is 58.5 g/mol.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Use of amount of substance in relation to masses of pure substances

Question

117 g

The mass of NaCl produced is calculated using the formula mass = moles x Mr. Here, mass = 2 mol x 58.5 g/mol = 117 g.

Misunderstanding Mathematical Symbols

Students often confuse the use of mathematical symbols like =, <, and > in calculations, leading to incorrect relationships between quantities.

Practice using these symbols in context, ensuring to understand their meanings and how they relate to the quantities being compared.

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