Compare the energy conversions that happen when food burns and when the food molecules react with oxygen in the body to provide energy

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

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