Answer: The molarity of sodium chloride in sea water is 0.479 M.
Step-by-step explanation:
Mass of NaCl = 28.0 grams
Molar mass NaCl = 58.44 g/mol
Step 2: Calculate moles
Moles NaCl = mass NaCl / molar mass NaCl
Moles NaCl = 28.0 grams / 58.44 g/mol
Moles NaCl = 0.479 moles
Step 3: Calculate molarity NaCl in sea water
Molarity = moles / volume
Molarity NaCl = 0.479 moles / 1L
Molarity of NaCl in sea water = 0.479 mol/L = 0.479 M
The molarity of sodium chloride in sea water is 0.479 M