Question

There are 0.09 moles of sodium sulfate in 12 mL of solution. What is the concentration? ​

Answer 1

concentration (molarity) = moles/volume

dm³ = litre

12ml = 0.012L = 0.012dm³

sooo:

concentration = 0.09/0.012

=7.5m or mol dm^-3

Hope this helped :) !