Here's how to calculate the molarity of the NaCl solution:

1. Convert grams of NaCl to moles:

* Find the molar mass of NaCl:

* Na: 22.99 g/mol

* Cl: 35.45 g/mol

* Molar mass of NaCl = 22.99 + 35.45 = 58.44 g/mol

* Calculate moles of NaCl:

* moles = mass / molar mass

* moles = 29.0 g / 58.44 g/mol = 0.496 moles

2. Convert milliliters of water to liters:

* 150 ml * (1 L / 1000 ml) = 0.150 L

3. Calculate molarity:

* Molarity (M) = moles of solute / liters of solution

* M = 0.496 moles / 0.150 L = 3.31 M

Therefore, the molarity of the NaCl solution is 3.31 M.