A sample of ammonia at 14 atm and 25 °C in a cylinder fitted with a moveable piston expands against a constant external pressure of 1.00 atm. At equilibrium, the pressure and volume of the gas are 1.00 atm and 23.5 L respectively. The specific heat of ammonia is 0.0258 J g-' K-!. (i) Write the expression for finding q and w for the above processes, in the question what do you know and what do you need to find? (ii) Calculate the q, w and AU for the process.

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.