In a laboratory experiment, a 10.0 mL sample of NaCl solution is poured into an evaporating dish with a mass of 24.10 g. The combined mass of the evaporating dish and the NaCl solution is 36.15 g. After heating, the evaporating dish and dry NaCl have combined mass of 25.50 g. How many grams of sodium ion Na+ are in 1.50g toothpaste?