18.2 g of a basic solution was mixed with 31.1 g of an acidic solution in a calorimeter with a calorimeter constant of 76.8 J K–1 with all substances initially at 27.8 °C. The resulting solution was observed to be at a temperature of 54.2 °C and have a heat capacity of 4.59 J g–1 K–1.
Determine q for the mixing process.

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: