5. How many moles of NaCl will it take to make 3.0 L of

a 0.1 M solution?

0.30 mole NaCl needed.

Explanation:

From the definition of solution molarity = > Molarity = moles solute / Volume of Solution in Liters = > Molarity = moles/Volume (L) = > solve for moles = >

moles = Molarity X Volume (L) = (0.1M) (3.0L) = 0.30 mole NaCl needed.