When `12.0g` of `C` reacted with oxygen to form `CO` and `CO_(2)` at `25^(@)C` at constant pressure, `313.8 kJ` of heat was released and no carbon remained. Calculate the mass of oxygen which reacted.
`Delta_(f)H^(Theta) (CO,g) =- 110.5 kJ mol^(-1)` and
`Delta_(r)H^(Theta) (CO,g) =- 393.5 kJ mol^(-1)`

When 12.0g of C reacted with oxygen to form CO and CO_(2) at 25^(@)C at constant pressure, 313.8 kJ of heat was released and no carbon remained. Calculate the mass of oxygen which reacted. Delta_(f)H^(Theta) (CO,g) =- 110.5 kJ mol^(-1) and Delta_(r)H^(Theta) (CO_(2),g) =- 393.5 kJ mol^(-1)

When 12.0g of carbon (graphite)reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 252 kJ of heat was released and no carbon remained. If Delta H_(f)^(0)(CO,g)= -110.5 kJ mol^(-1) and Delta H_(f)^(0)(CO_(2),g)= -393.5 kJ mol^(-1) ,calculate the mass of oxygen consumed.

When 12.0g of carbon (graphite)reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 252 kJ of heat was released and no carbon remained. If Delta H_(f)^(0)(CO,g)= -110.5 kJ mol^(-1) and Delta H_(f)^(0)(CO_(2),g)= -393.5 kJ mol^(-1) ,calculate the mass of oxygen consumed.

When 2.4g of carbon reacted with X g of oxygen to form CO and CO_2, 50.4 kJ of heat was released and no reactant is left over. Standard heats of formation of carbon monoxide and carbondioxide are -110.5 kJ mol^(-1) and -393.5 kJ mol^(-1) respectively. Calculate X.

The combustion of 1 mol of benzene takes place at 298 K and 1 atm . After combustion, CO_(2)(g) and H_(2)O(l) are produced and 3267.0 kJ of heat is librated. Calculate the standard entalpy of formation, Delta_(f)H^(Θ) of benzene Given: Delta_(f)H^(Θ)CO_(2)(g) = -393.5 kJ mol^(-1) Delta_(f)H^(Θ)H_(2)O(l) = -285.83 kJ mol^(-1) .

The combustion of 1 mol of benzene takes place at 298 K and 1 atm . After combustion, CO_(2)(g) and H_(2)O(l) are produced and 3267.0 kJ of heat is librated. Calculate the standard entalpy of formation, Delta_(f)H^(Θ) of benzene Given: Delta_(f)H^(Θ)CO_(2)(g) = -393.5 kJ mol^(-1) Delta_(f)H^(Θ)H_(2)O(l) = -285.83 kJ mol^(-1) .