Un volum de 168 m3(c. N.) de gaz metan de puritate 80% se supune arderii cu o cantitate stoechiometrica de aer. Calculeaza volumul de azot (80% n2 in aer) ce se separa in urma procesului de ardere. Ce cantitate de apa de var de cp=40% este necesara pentru a absorbi total co2 rezultat la ardere? Se dau : ac=12 ; ah=1 ; aca=40 ; ao=16 ; an=14

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: