Hami would suck a meet packet for a million

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

What is the oxidation state of each individual carbon atom in c2o42−?