In a reaction of iron and oxygen to produce iron (III) oxide, 2.1 g of iron were completely consumed. What are the percent yield and percent error if 2.5 g of iron (III) oxide is actually produced?

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.