Which equation represents the reaction for the stanard enthalpy of formation ,`DeltaH_(f)^(@),"for"B_(5)H_(9)(g)` at 298 K and 1atm?

Which of the following equations represents enthalpy of formation of 'H_2 O ?'

Which of the following reaction correctly represent the standard enthalpy of formation (deltaH_f^0) of methane?

Which of the following equations corresponds to the definition of enthalpy of formation at 298 K?

Which of the following equations corresponds to the definition of enthalpy of formation at 298 K?

Which of the following equations corresponds to the definition of enthalpy of formation at 298K ?

The enthalpy change of which reaction corresponds to DeltaH_(f)^(@) "for"Na_(2)CO_(3)(s)298K?

For a reaction, C_((s))+O_(2(g))rarrCO_(2(g)) What is the relation between enthalpy of reaction (DeltaH_(r)), enthalpy of formation of CO_(2)(DeltaH_(f)) and enthalpy of combustion of carbon (DeltaH_("comb")) ?

For a reaction, C_((s))+O_(2(g))rarrCO_(2(g)) What is the relation between enthalpy of reaction (DeltaH_(r)), enthalpy of formation of CO_(2)(DeltaH_(f)) and enthalpy of combustion of carbon (DeltaH_("comb")) ?