Calculate percent composition of 2 samples of sea water to find out which has the highest percent composition.

Question

Its involves by heating the samples, evaporating, weighing and comparing weights and calculating, but I want to know how exaclty to cary this experiment should be done.

Answer 1

start with 100.0g of sea water for each sample.
Do the operation you outlined.
Weight of salt is the percentage (salinity) concentration.