Calculate the amount of mole of iron produced from the reaction of 15.9 grams of iron oxide. Fe2O3 + 3 H2 +2 Fe + 3 H2O

Iknow #2 is d. i just need to know why

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.