From the following heats of combustion, CH3OH(l) + 3 2 O2(g) → CO2(g) + 2H2O(l) ΔH o rxn = −726.4 kJ/mol C(graphite) + O2(g) → CO2(g) ΔH o rxn = −393.5 kJ/mol H2(g) + 1 2 O2(g) → H2O(l) ΔH o rxn = −285.8 kJ/mol Calculate the enthalpy of formation of methanol (CH3OH) from its elements: C(graphite) + 2H2(g) + 1 2 O2(g) → CH3OH(l) kJ/mol

How is the composition of a meteorite relevant to finding out the composition of earth's core?

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

Is laundry detergent an acid or a base?