Answer: 0.5 M
Explanation:
molarity = (moles of solute)/(liters of solution)
- To find liters of solution, we can convert the 500 grams of water to liters, which is 0.5 L.
- The formula mass of NaCl is about 58.44 g/mol, so 13.7 grams is about 13.7/58.44 = 0.234 mol.
Hence, the molarity is (0.234)/(0.5) = 0.5 M (to 1 s.f.)
