Find the standard molar enthalpy (AHº)for the reaction: Fe2O3(s) + 2 Als) – Al2O3(s) + 2 Fe(s)
Given
2 Als) + 3/2 O2(g) → Al2O3(s)
AH° = -1676 kJ
2 Fes) + 3/2 02() - Fe2O3(s)
AH° = -824 kJ
-852 kJ
+2500 kJ
+852 kJ
-2500 kJ

a. hope i'm right

explanation:

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )