The heat of combustion of carbon to CO_(2) is -393.5 "kJ/mol". The heat released upon formation of 35.2 g of CO_2 from carbon and oxygen gas is :

The heat of combustion of carbon to CO_(2) is -393.5 "kJ/mol". The hea

1.	The heat of combustion of carbon to CO_(2) is -393.5 "kJ/mol". The heat released upon formation of 35.2 g of CO_2 from carbon and oxygen gas is :
Answer» `-630 kJ` `-3.15 kJ` `-315 KJ` `+315 kJ` Solution :Formation of `CO_2` can be represented as `C_((s)) + O_(2(g)) toCO_(2(g))`, `Delta_(F) H= - 393.5 "kJ MOL"^(-1)` (1 MOLE = 44 g) Heat RELEASED on formation of `44 gCO_2` `=393.5 "kJ mol"^(-1)` `= (393.5 "kJ mol"^(-1) )/( 44g ) xx 35.2 g` `+315 kJ`