1. It is possible to measure the enthalpy change for the two reactions below. Reaction equation ΔH°(kJ/mol·rxn) CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g) CH3OH(g) + 3/2O2(g) → CO2(g) + 2H2O(g) -802.4 -676 Using Hess’s Law, determine the enthalpy change for the reaction below. CH4(g) + ½ O2(g) → CH3OH(g)

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.