Moles and masses 1. a) This is the equation for one of the reactions in the blast furnace to produce iron:
FeO2 + 2CO - Fe + 2C02
(0) How many molecules of carbon dioxide are produced when a formula unit of
iron(IV) oxide reacts?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.