PPT-The Mole How do we measure the amount of a substance?

Matter is made of different kinds of particles We count the number of particles of that substance Since there are a very large number of particles in any substance we need to define a unit of measure. Half-Lives. Objective. To derive the half-life equation using calculus. To learn how to solve half-life problems. To solve basic and challenging half-life problems. To understand the applications of half-life problems in real-life. Half-Lives. Objective. To derive the half-life equation using calculus. To learn how to solve half-life problems. To solve basic and challenging half-life problems. To understand the applications of half-life problems in real-life. Stoichiometry Review. The Mole . Atoms are so small, it is impossible to count them by. the dozens, thousands, or even millions.. To count atoms, we use the concept of the . mole. 1 mole of. atoms = . Chemistry 3/18/19. Drill. Write down these questions. While watching the video clips, write the answers, and when done, discuss with your row:. Why is airbag use in cars important?. What is the chemistry involved in air bag inflation?. These dominos are grouped.. Thor = 300. Hulk = 175. Superman = 500. The Thing = 225. Captain America = 410. Wolverine = 125. Spiderman = 275 . These dominos are grouped.. Thor = 300. Hulk = 175. Superman = 500. Calculating the amount of substance needed in an initial concentration to produce a final desired dilution and volume. Example 1 What amount of a substance is required to make 1500mL of a product such that 50mL diluted to 1000mL will give a 1% v/v concentration? 1 mole of a substance is 6.02 x 10. 23. . representative particles. .. Avogadro’s number = . 6.02 x 10. 23. Avogadro determined the difference between atoms and particles.. Representative particle. Use . the coefficients to predict the amount of reactant consumed or product formed. The ratio of the coefficients is a ratio of the moles taking part in a reaction.. Reactants (on the left of the arrow) are consumed. 23 . particles. . So a “mole” is a number, very similar to a dozen. . A dozen = 12 . A mole (mol) = 6.022 x 10. 23. It can be found in your reference packet on page one. Avogadro’s number = 6.022 x 10. Stoichiometry Unit Objectives. Solve reaction stoichiometry problems:. Mole- Mole. Mass – Mole. Mass-Mass. Mass Volume. Introduction. In any stoichiometry problem we start with a given quantity of a reactant or product. We use conversion factors and unit analysis to determine the quantities of the unknowns that react or form.. clinical evaluation. These patient assessment measures were developed to be administered at the initial patient interview and to monitor treatment progress. They should be used in research and evalu The Mole . Atoms are so small, it is impossible to count them by. the dozens, thousands, or even millions.. To count atoms, we use the concept of the . mole. 1 mole of. atoms = . That is, 1 mole of atoms = __________ atoms. Example 1. What amount of a substance is required to make 1500mL of a product such that 50mL diluted to 1000mL will give a 1% v/v concentration?. Method. Step 1: . Calculate the quantity of substance in the final dilution. First lesson of our next unit: U7 Stoichiometry . P3 Challenge – . Determine the number and kinds atoms for the chemical formula Al. 2. (SO. 4. ). 3. Today’s Objective –. Moles and particles. Assignment: .