120 grams #NaCl# is equal to how many molecules of #NaCl#? Chemistry Measurement Unit Conversions 1 Answer Kris Caceres · Ernest Z. Sep 15, 2016 #1.24 * 10^24# formula units Explanation: #"NaCl"# is an ionic compound, so there are no molecules, only formula units. #"1 mol of NaCl" = 6.02 * 10^23 " formula units"# #"Formula units NaCl" = "120 g NaCl" * "1 mol NaCl"/"58.44 g NaCl" * (6.02 *10^23 " formula units")/"1 mol NaCl"# #= 1.24 * 10^24 " formula units"# Note: 58.44 g/mol is the molecular weight of #"NaCl"# Answer link Related questions How can I memorize the metric system? How can you convert centimeters to millimeters? How can i convert centimeters to meters? What celsius temperature is the same when converted to fahrenheit? What metric unit is used to measure distance? How can I convert Celsius into Kelvin? If a planet is 13 billion kilometers from the Sun, and the distance of an Astronomical Unit (AU)... What is an example of a unit conversion practice problem? What is the pressure conversion factor for torr to kpa? How do you convert units of measurement? See all questions in Unit Conversions Impact of this question 9085 views around the world You can reuse this answer Creative Commons License