Calculate the enthalpy of reaction (AHrxn) for the following reaction: Fe2O3(s) + 3 CO(g) - 2 Fe(s) + 3 CO2(g) Given: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) AH = -1648 kJ 2 CO2(g) → 2 CO(g) + O2(g) AH = +565.4 kJ​

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance