You dissolve 40 grams of table salt into 0.25 L of water. What is the molarity of the solution?

The molarity of the solution is 2.736 M

calculation

Step 1: find moles of table salt (Nacl)

moles = mass : molar mass

from periodic table the molar mass of table salt (NaCl) = 23+35.5 = 58.5 g/mol

moles is therefore = 40 g: 58.5 g/mol = 0.684 moles

Step 2: find molarity

molarity = moles: volume in liters

= 0.684 moles: 0.25 L=2.736 M