Draw the condensed structural formula of the isomers of C4H10O

Option C: Mixing 500 mL of 0.4 M NaCl solution with 500 mL water

Explanation:

0.4M is [NaCl]

Molar concentration which means moles of solute in 1L.

How many moles, do we have in our volume of 500 mL

Molarity . volume = mole

0.4 mol/L . 0.5L = 0.2 mole

(remember convert mL to L)

This 0.2 mole of NaCl that were in 500 mL, are also in 500 mL of water, so In 1L of water, I have the double of mole, so 0.4M