Here's how to calculate the moles of NaCl in a 1-liter 0.1 M solution:

Understanding Molarity

* Molarity (M) is a unit of concentration that tells you the number of moles of solute dissolved in 1 liter of solution.

* In this case, a 0.1 M NaCl solution means there are 0.1 moles of NaCl in every 1 liter of solution.

Calculation

Since you have 1 liter of a 0.1 M solution, you have 0.1 moles of NaCl.