Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g)2PbO(s). ΔH° = -434.6 kJ

(2) 2Zn(s) + O2(g)2ZnO(s).ΔH° = -696.6 kJ

what is the standard enthalpy change for the reaction:

(3) PbO(s) + Zn(s)Pb(s) + ZnO(s).ΔH° = __kJ

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

Why is silver chloride is an ionic compound