chemistry h/w help
posted by john on .
The concentration of lead nitrate (Pb(NO3 )2 ) in a 0.726 M solution is __________ molal. The density of the solution is 1.202
M = moles/L
0.726 means 0.726 moles/L.
mass = volume x density
mass = 1000 mL x 1.202 g/mL = 1202 grams.
Convert 0.726 moles to grams and subtract that from 1202 g to find grams solvent then convert to kg solvent.
Finally, m = moles/kg solvent.
thanks i was able to solve it...