Answer:
-14,240.8 kJ of heat is produced by the complete combustion of 284 grams of methane.
Explanation:
[tex]CH_4+2O_2\rightarrow CO_2+2H_2O,\Delta H=-802.3 kJ[/tex]
Mass of methane = 284 g
Moles of methane = [tex]\frac{284 g}{16 g/mol}=17.75 g/mol[/tex]
According to chemical reaction, combustion of 1 mole of methane gives 802 kilo Joules of heat , then 17.75 moles of methane of on combustion will give :
[tex]17.75 \times (-802.3 kJ)=-14,240.8 kJ[/tex]
-14,240.8 kJ of heat is produced by the complete combustion of 284 grams of methane.
