The Molarity (M) of an aqueous solution containing 5.85 g of NaCl in 500 mL water is:

(Given: Molar Mass Na: 23 and Cl: 35.5 g mol⁻¹)

Question

The Molarity (M) of an aqueous solution containing 5.85 g of NaCl in 500 mL water is:

(Given: Molar Mass Na: 23 and Cl: 35.5 g mol⁻¹)

Canvas Classes · Accepted Answer

🧠 Molarity = Moles of Solute per Litre of Solution — Two-Step Setup

Read the question carefully. You are given mass of  in grams and volume of water in mL. Molarity is always moles per litre, so two conversions are needed before you write the formula: grams to moles, and mL to L. That is the whole problem.

First step: spot that  molar mass is given indirectly — Na is 23, Cl is 35.5, so . Whenever a problem gives you atomic masses, that is the examiner telling you to compute the molar mass you

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