P. 4522. News: Each saved cubic metre of natural gas protects the environment from the emission of 1.7 kg of carbon-dioxide gas. 97% of the natural gas is methane.
a) What is the temperature of the methane if 1.7 kg carbon-dioxide is emitted during the burning of 1 cubic metre of methane at normal pressure?
b) How many kg Oxygen is used and how much water vapour is gained?
c) By what amount is the calorific value of 1 cubic metre of methane smaller than its heat of combustion?
Deadline expired on 10 April 2013.
Google Translation (Sorry, the solution is published in Hungarian only.)
Megoldásvázlat. \(\displaystyle a)\) \(\displaystyle 39~^\circ\)C-os metán.
\(\displaystyle b)\) 2,5 kg oxigén fogy el, és 1,4 kg vízgőz keletkezik.
\(\displaystyle c)\) A különbség kb. 3,5 MJ.