In the following reaction, what coefficient will be written before the oxygen molecule (o2) to balance the chemical equation? (1 point) c5h12 + o2 co2 + h2o

Based on the equation and the information in the table, what is the enthalpy of the reaction?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.