CHEM Lab 2.docx - Virtual Moles and Avogadro\u2019s Number NAME_Montana Rogers INTRODUCTION Atoms and molecules are too small to count one by one

CHEM Lab 2.docx - Virtual Moles and Avogadrou2019s Number...

This preview shows page 1 - 2 out of 3 pages.

Virtual Moles and Avogadro’s NumberNAME____________Montana Rogers______________________________INTRODUCTION: Atoms and molecules are too small to count one by one. Avogadro’s Number, or a Mole, was defined to make these calculations and measurements easy. Just as the word “dozen” means the number 12 no matter what the objects are, the word “mole” means the number 6.02 x 1023no matter what the object is. In this way chemists can look at the periodic table and relate atomic weight to either amu or to g/mol. For example, looking at the periodic table lithium has an atomic mass of 6.941 g/mol. This means that 6.941 g of lithium metal contains 6.02 x 1023atoms. The word mole can apply to any object: atoms, electrons, cars, or even M&Ms.Avogadro’s number = 1 mole = 6.02 x 1023itemsPROCEDURE: 1.Enter Virtual Chem Lab and choose the “Calorimetry” module.2.Click near the “Unknowns” shelf to enter the stockroom.3.Choose one of the following: a metal that is a pure element from the metals cabinet, a salt, an organic (choose one with the formula written on the bottle, not for example TNT.) Place your

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture