Aset of four 15.0-ml solutions—each in a similar open dish—was left at room temperature, and the amount that remained was recorded after every hour. which of the solutions do you expect to be the first to completely evaporate from the open dish?

The answer is 0.25 m Na2SO4 just finished the test

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.