If you calculated a salt-tainted solution to be 3.5%, what is the molarity of this solution? assume the density of this solution is 1.03g/cc. BTW, this is the salinity of sea-water. pls do help thanks.
I assume this is 3.50% w/w although I don't know that.
3.50g NaCl/100 g soln
3.50 g = how many mols. That's mols = grams/molar mass NaCl.
The 100 g soln is converted to volume.
volume = mass/density = 100/1.03 = ?. Convert to L, then
M = mols NaCl/L soln.