How many moles of salt are in 13.8g of sodium chloride

Answer 1

The first thing that you need to do is find the molar mass of Na and Cl. Na is 23.0g and Cl is 35.5g which you add together to get the molar mass of the two is 58.5g/mole. Take the 13.8g of NaCl and divide it by the 38.5g will give you the moles: 13.8g NaCl(1 mole/58,5g)=.236 moles of NaCl.