* ppm stands for "parts per million": It's a way to express very small concentrations.
* NaCl is the chemical formula for sodium chloride (table salt). It's a compound made of sodium (Na) and chlorine (Cl) ions.
* A 100 ppm solution of NaCl means that there are 100 parts of NaCl for every 1 million parts of the solution. This solution contains both sodium and chlorine ions.
To determine the concentration of sodium (Na) in a 100 ppm NaCl solution, you need to consider the molar mass of NaCl and Na:
* Molar mass of NaCl: 58.44 g/mol
* Molar mass of Na: 22.99 g/mol
The ratio of Na to NaCl is 22.99/58.44, which is about 0.393. Therefore, a 100 ppm NaCl solution would contain approximately 39.3 ppm of Na.
