'Nh 3' diaporamas de présentation

Local tests of spatial variation of m e /m p. S. A. Levshakov Department of Theoretical Astrophysics Physical-Technical Institute, St. Petersburg. JINR, Dec 1-5, 2014. Department of Theoretical Astrophysics Physical-Technical Institute, St. Petersburg , 201. Low energies.

Haloalkanes And Haloarenes. The Introduction. The replacement of hydrogen atom(s) in a hydrocarbon, aliphatic or aromatic, by halogen atom(s) results in the formation of

Balancing Chemical Equations Discussion and Clicker questions by Trish Loeblein 6/12/2011. Learning Goals : Students will be able to: Describe what “reactants” and “products” in a chemical equation mean.

Stoichiometry Review. What is a mole?. Definitions: A mole ( mol ) is a unit used for measuring atoms, molecules, or other particles A mole is equal to the number 6.022 x 10 23 A mole was the name given to the quantity of atoms in exactly 12 grams of carbon-12. Molar Mass.

What can you see in this picture? Think, pair, share! Time: 1 minute. Changes in LIGANDS. Changes in CO-ORDINATION NUMBER and LIGAND. Changes in OXIDATION STATE. [Co(NH 3 ) 6 ] 2+ ( aq ). [Co(H 2 O) 6 ] 2+ ( aq ). [ CuCl 4 ] 2- ( aq ). [Cu(H 2 O) 6 ] 2+ ( aq ).

Acids and Bases. Acid/Base Definitions. Arrhenius Model Acids produce hydrogen ions in aqueous solutions Bases produce hydroxide ions in aqueous solutions Bronsted-Lowry Model Acids are proton donors Bases are proton acceptors. Acid Dissociation. HA  H + + A -

Introduction to Energetics. a. demonstrate an understanding of the term enthalpy change, Δ H b. construct simple enthalpy level diagrams showing the enthalpy change

Today’s Agenda. (1) Expressing chemical reactions (2)Balancing chemical reactions (3) Chapter 5 work section 3 and 4 **Test on Thursday: you can use your notes. Warm Up. What is the difference between naming Covalent compounds and Ionic compounds?. Naming Ionic Compound

Anton Cwik , Ethan Sox. Per. 4. BIOGEOCHEMICAL CYCLES. ‘ Fundamentals ’ of biogeochemical cycles. All matter cycles...it is neither created nor destroyed... As the Earth is essentially a closed system with respect to matter, we can say that all matter on Earth cycles .

Chemistry 17.4. How much heat is released when 100.0 g of Calcium Oxide reacts with excess water? (CaO = -65.2kJ/mol). 17.4. Hess’s Law. Hess’s Law What are two ways that you can determine the heat of reaction when it cannot be directly measured?. 17.4. Hess’s Law.

Media for Industrial fermentation. Lecture – 6 Tahir. Detailed investigation is needed to establish the most suitable medium for an industrial fermentation process, but certain basic requirements must be met by any such medium.

COORDINATION CHEMISTRY. COORDINATION COMPLEX – Any ion or neutral species with a metal atom or ion bonded to 2 or more molecules or ions. Zn(NH 3 ) 4 2+. Al(OH) 4 -. Charged coordination complexes are called COMPLEX IONS.

TRENDS & RELATIONSHIP BETWEEN AMMONIA AND INTERACTING GASES AND AEROSOLS IN THE UK.

Topic 14. Table of Contents. Topic 14. Topic 14: The Mole. Basic Concepts. Additional Concepts. The Mole: Basic Concepts. Topic 14. Measuring Matter.

Chapter 5 Chemical Reactions and Quantities. 5.8 Mass Calculations for Reactions. Steps in Finding the Moles and Masses in a Chemical Reaction. Moles to Grams. Suppose we want to determine the mass (g) of NH 3 that can form from 2.50 moles N 2 .

Mixtures, Water, & Solutions. Chapter 2,15, & 16. Water. Properties Water is a polar molecule . Hydrogen bonds form between water molecules. High surface tension Low vapor pressure Maximum density at 4 o C (as a liquid!) What would happen to aquatic life if ice were denser than water?.

ICFMCE 2017, November 24-26, 2017, Dubai. The Spray Characteristics of Twin Fluid Nozzle on Urea-SCR Applied to Marine Diesel Engines. Hyung Sun Park, Sang Ji Lee and Jung Goo Hong. School of Mechanical Engineering, Kyungpook National University. Opportunity for the Environment.

Organic reaction maps. EDITED from http://www.rsc.org/learn-chemistry/resource/res00000644/organic-reaction-maps. Task 1. Draw the structural formula for the following organic substances. propylamine. propan-1-ol. propanamide. propanal. propan-2-ol. propanoic acid. propane.

Percent Yield and Stoichiometry. Chemistry. Percent Yield describes how much product was actually made in the lab versus the amount that theoretically could be made. Actual Yield  100 = Percent Yield Theoretical Yield Percent yield tells you how close you were to the 100% mark.

7.7 Mass Calculations for Reactions. A mixture of acetylene and oxygen undergoes combustion during the welding of metals. We can calculate the mass of acetylene used to weld a specific mass of metal.