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.
Hydrogen has an atomic mass unit of 1 so a mole of hydrogen measures 1 gram. It is common in molecular biology to use units of moles and molarity. It is important to distinguish the unit of mass (moles) from the unit of concentration (molarity). Moles are simply a unit of mass and are abbreviated as mol. Molarity is designated by an upper case âMâ and is defined as moles per liter.