One cubic meter of an ideal gas at 600 k and 1000 kpa expand to five times its initial volume as follows:
(a) by a mechanically reversible, isothermal process [t 2 = 600k; p 2 = 200kpa; w= -1609 kj]
(b) by a mechanically reversible, adiabatic process [t 2 =208.96k; p 2 = 67.65 kpa; w= -994.4 kj] for each case calculate the final temperature, pressure and the work done by the gas. c p =21 jmol- 1k-1.

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.