Write out all your work on your own piece of paper which you will scan/photo and upload as a single PDF file into a separate assignment after completing this quiz. A 6.25 g sample of magnetite (Fe3O4) contains 4.52 g of Fe. What are the percentages of iron and oxygen in magnetite?

List four protein supplements.

When soil storage capacity is low, CN as well as the surface runoff will be                                . (Please select the best answer)

Which of the following statements regarding atoms, molecules, and moles is correct?

How much organic matter is present in a sample that has 20% water (as fed) and 20% ash (in a dry matter) basis?

List three processing methods for decreasing protein digestion.

What is the formula for a compound composed of Ca2+ ions and PO43− ions?

The figure shows a reaction between hydrogen and oxygen gases to produce water. Is the diagram accurate, and if not, what is wrong with it, and how could it be fixed?

What is the difference among Nitrogen Free Extract, Non-Fiber Carbohydrates and Non-Structure Carbohydrates?

Describe in details the chemical digestion of proteins in the mouth, stomach, and small intestine.