What mass of NaCl can be dissolved in 100g of water at 50c? what mass of KNO3 can be dissolved in 200g of water in 20c?

Which element is least likely to undergo a chemical reaction

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:

One similarity and one difference between an element and a mixture of elements