Use bond energies to calculate the enthalpy change for the following reaction. H2(g) + CO2(g) — H2O(g) + CO(g)

please answer in a table :)

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6