How many moles of NaCl would be added to 350.0 mL to make up a 0.420 M NaCl solution? unit included.?

Question

How many moles of NaCl would be added to 350.0 mL to make up a 0.420 M NaCl solution

Answer 1

Ok, here you need to remember this formula :

M = moles / volume of solution

In other words, if they are asking you for the moles to make a 0.42 M solution, you just need to use that formula :

0.42 = moles / 350 mL

0.42*350*10^-3 = moles

moles = 0.147

Hope that helped