1)Given the following thermochemical equations CO2 (g) → C (s) + O2 (g) ΔH =+393.5 kJ2
CO (g) + O2 (g) → 2 CO2(g) ΔH = –566.0 kJ2
H2 (g) + O2 (g) → 2 H2O (g) ΔH = –483.6 kJ

Use Hess's law to calculate ΔH for the reaction: C (s) + H2O (g) → CO (g) + H2 (g)

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.