A student measured out a 5.790 g sample of a hydrated salt.After heating,the mass of an hydrous salt was found to be 3.701 g.
Use these data to calculate the percent by mass of water in the hydrated salt
hydrated salts are salts which can absorb moisture. Once these hydrated salts are heated the water attached to salt will evaporate and the pure salt will remain.
Initial mass of the hydrated salt = 5.79g
Final mass of the heated salt = 3.701g
Mass of water in the hydrated salt = 5.79-3.701
Mass % of water in the hydrated salt = 2.089/3.701*100%
So in the hydrated salt 56.44% of the mass is water.