Answer :

To find the mass of 1 mole of NaCl, we need to calculate the molar mass of sodium chloride (NaCl). Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol).

NaCl is composed of two elements:

  1. Sodium (Na): The atomic mass of sodium is approximately 23 grams per mole (g/mol).

  2. Chlorine (Cl): The atomic mass of chlorine is approximately 35.5 grams per mole (g/mol).

To find the molar mass of NaCl, we add the atomic masses of sodium and chlorine:

[tex]\text{Molar Mass of NaCl} = \text{Atomic mass of Na} + \text{Atomic mass of Cl} = 23 \, \text{g/mol} + 35.5 \, \text{g/mol} = 58.5 \, \text{g/mol}[/tex]

Therefore, the mass of 1 mole of NaCl is 58.5 grams.

The correct answer is c. 58.5 g.

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