Consider the reaction Ca(OH)2(s)→CaO(s)+H2O(l)

with enthalpy of reaction
ΔHrxn∘=65.2kJ/mol

What is the enthalpy of formation of CaO(s)?

How many miles of calcium oxide will be produced when 1.6 miles of iron (iii) oxide react with calcium phosphate

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid