Characteristics of pencil before placing it in water

What's the waste product of electrons and pyruvate combining in fermentation?  

Anurse is caring for a client who is learning how to take care of a newly created colostomy. when observing a return demonstration of the colostomy irrigation, the nurse evaluates that more teaching is required when the client carries out what procedure?

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.