How many grams of NaCl is required prepare 200 mL of a solution of 1 M NaCl (Molar of mass of NaCl=58.44g/mol)?
200 ml of 1 M Nacl have
Moles of NaCl = 200 × 1 / 1000 = 0.2 mole
Mass of NaCl = moles of NaCl × Molar mass .
Mass of NaCl = 0.2 × 58.44 = 11.688 gram .
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