Given these reactions, where X represents a generic metal or metalloid 1) H2(g)+1/2 O2(g)⟶H2O(g)Δ1= −241.8 kJ

2) X(s)+2Cl2(g)⟶XCl4(s)Δ2= +139.7 kJ

3) 1/2H2(g)+1/2Cl2(g)⟶HCl(g)Δ3= −92.3 kJ

4) X(s)+O2(g)⟶XO2(s)Δ4= −531.1 kJ

5) H2O(g)⟶H2O(l)Δ5= −44.0 kJ

what is the enthalpy, Δ,
for this reaction?

XCl4(s)+2H2O(l)⟶XO2(s)+4HCl(g)

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 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.

8. what happens to matter during a chemical reaction

The ammonia molecule in the diagram has the observed bond orientation because