Question

One thousand grams of seawater would consist of how many grams of dissolved substances?

Answer 1

Seawater from the Dead Sea....?

Explanation:

Typically, seawater contains `3.5%` `"mass/volume"`...and so your `1000*g` of seawater contains about `35*g` of salt, principally sodium chloride… Anyway, consult this site for more details. Seawater from the Dead Sea contains approx. ten times this mass of salt.