Answer:
The molar concentration of Na+ ions in 0.0450 M solutions of the following sodium salts in water is 0.0450 M.
Step-by-step explanation:
This is because the molar concentration of a solute in a solution is a measure of the amount of solute dissolved in a given volume of solvent. In this case, the solute is a sodium salt and the solvent is water. The concentration of the solution is 0.0450 M, which means that there are 0.0450 moles of sodium salt dissolved in every liter of water. Since the sodium salt contains Na+ ions, the molar concentration of Na+ ions in the solution is also 0.0450 M.