1.7 The Mole2. Number of moles =mass in grams relative mass How many moles are present in 0.35g of ammonium hydroxide? RMM = 14 + 4 + 16 + 1 = 35 1 mole = 35gNo of moles…

IBIA

Slide 1DEVELOPMENT OF THE ATOMIC MODEL From Democritus to Rutherford Slide 2 c.400 B.C. Ancient Greek Philosophy Everything in the universe is made of one or more of the…

Slide 1 Slide 2 MOLAR MASS & PERCENT COMPOSITION Slide 3 MOLES How many moles are present? CH 4 C = 1 mol, H = 4 mol. Slide 4 MOLAR MASS CH 4 Mass of 1 mol of C = 1 x…

Slide 1 Chemical Composition Moles! Moles! Moles! Slide 2 Little Problem I have a sample of CO 2 that contains 3 moles oxygen, how many grams of carbon do I have? A. 18.0…

Slide 1 Atoms, Molecules and Ions Chapter 2 Slide 2 Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. All atoms of a given…

Slide 1 1 Lecture 2: Atoms and Elements Lecture Outline Defining matter and its types Elements and symbols The periodic table The atom Atomic number and mass number Isotopes…