# Help with moles

by hamxa7
Tags: moles
 Admin P: 23,363 Hard to tell what you want to clear not knowing what your concepts are. I guess by % in the second equation you mean division, although the same % in the first equation is placed where the multiplication should be: $$C [\frac {g} {dm^3}] = C [\frac {mol}{dm^3}] \times M_m [\frac {g} {mol}]$$ where Mm is a molar mass. So, what is your problem (apart from procrastination)?