if ebook is eligible to load, you can Load this book to friend from the product detail page of a book you purchased on Amazon. 1  Visit the Kindle Store. 2  On the product detail page, click Loan this book. 3  You will be sent to the Loan this book page.
From Yahoo Answers. Question: The mole concept is important in chemistry because 1. atoms and molecules are very small and themole concept allows us to count atoms and molecules by weighing macroscopic amounts of material. 2. it establishes a standard for reaction stoi-chiometry. 3. it explains the properties of gases.
In human beings, phosphorus is important for health, as it: â makes up the structure of bones and teeth. â is fundamental to the transfer of energy within cells and thus to all body functions. â is a vital element in the structure of DNA â without it, DNA cannot form. â is an essential element in many proteins.