The burning of magnesium is a highly exothermic reaction. How many kilojoules of heat are released when 0.75 mol of Mg burn in an excess of O2? 2Mg(s) + O2(g) → 2MgO(s) + 1204 kJ

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.