To determine the amount of sodium chloride NaCl that can be obtained from the 5 grams of sea salt, you can use the given percentage of NaCl in the sample.Since the percentage of NaCl in the sea salt sample is 85%, you can calculate the amount of NaCl by multiplying the total weight of the sample 5 grams by the percentage of NaCl 85% .Amount of NaCl = 5 grams x 85% = 5 grams x 0.85 = 4.25 gramsSo, 4.25 grams of sodium chloride NaCl can be obtained from the 5 grams of sea salt sample using gravimetric analysis.