The complete combustion of ethanol, c2h50h (fw = 46.0 g/mol), proceeds as follows: c2h50h(l) + 3 02(g) → 2 c02(g) + 3 h20(l) llh = -555 kj what is the enthalpy change for combustion of 4.0 moles of c2h50h?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.

What is a metal replacement reaction