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How many grams of NaCl would you dissolve in water to make a 0.5 M NaCl solution?
Wiki User
∙ 13y ago
0.5 M means 0.5 moles per liter. so it depends on how many liters of solution that you need.
Suppose you want to make 1 liter of solution, then you need 0.5 moles of NaCl
From the webelements.com Periodic Table:
Atomic Mass of Sodium (Na) = 22.990 & Atomic Mass of Chlorine (Cl) = 35.453
So 1 mole of NaCl = (22.990 + 35.453) grams = 58.443 grams
Based on the 1 liter, we want to add 0.5 moles: (58.443 grams/mole)*(0.5 mole) = 29.2215 g (to make 1 liter of 0.5 M solution)
Wiki User
∙ 13y ago
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