Noke Lew weighs out 50.0 g of sodium chloride (NaCl) salt. She adds 300.0 g of water, so her total solution mass equals the salt plus the water together. Calculate the percent by mass of NaCl in her solution. Answer to 3 significant figures with appropriate units.

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: