'Cacl2' diaporamas de présentation

0.3 nA 0.02 nA 1 nA 0.05 nA 0.5 nA 1 nA 0.05 nA 1 nA 0.5 nA 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms

Chapter 15. Water. Water Molecules. O is more electronegative than H Gives O a partial negative charge Bent shape makes molecule polar Strong hydrogen bonds Water molecules are attracted to one another better than other molecules its size. Surface Tension.

Acidizing. The Fundamentals. Damage Assessment. Workover & Completion Commonalities. Fluid is put into the wellbore and/or formation Tubulars of some sort are run into the well. Fundamental Acid Techniques. Wellbore clean-up (tubing/casing) Matrix acidizing (sandstone or carbonates)

The Chlor-Alkali Industry. NaOH (Caustic Soda) Chlorine Na 2 CO 3 (Soda Ash). Downs Cell Production of Cl 2 (g) and Na (l):. Look up pictures of this on the web! Search for “Downs Cell Production of Sodium”. NaOH Cl 2 Na 2 CO 3. NaCl. Commodity 1994* 1995* 1996*.

Volumetric Calculations. How to analyze titration data and perform dilution calculations. Volumetric procedures. Involve the careful measurement of volumes of solutions

ELECTRON TRANSFER. Reduction-Oxidation RX (redox) A reaction in which electrons are transferred from one species to another. Combustion reactions are redox reactions - oxidation means the loss of electrons - reduction means the gain of electrons

Balancing Chemical Equations. CA Standards. Students know how to describe chemical reactions by writing balanced equations. Law of Conservation of Mass. In ordinary chemical reactions, the total mass of reacting substances is equal to the total mass of products

Chapter 8 Acids and Bases. 8.6 Reactions of Acids and Bases. Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings. Acids and Metals. Acids react with metals such as K, Na, Ca, Mg, Al, Zn, Fe, and Sn. to produce hydrogen gas and the salt of the metal.

Atomic Binding - Molecular Bonds. Atoms are known to come together to form molecules which can be relatively simple (e.g. the hydrogen molecule H 2 ) or very complex (e.g. the DNA molecule).

Soil Tests. - Basis for Soil Testing - Result Interpretation. Why Carry Out a Soil Test?. Aid in providing the optimum availability of nutrients for turf growth Identifies nutrient deficiencies and problems which can be addressed before a maintenance program is initiated

EMPIRICAL GAS LAWS Boyle’s Law P 1 V 1 = P 2 V 2 Charles’ Law V 1 / T 1 = V 2 / T 2 Guy-Lussac’s Law P 1 / T 1 = P 2 / T 2 Avogadro’s Law V 1 / n 1 = V 2 / n 2 Combined Gas Law P 1 V 1 / T 1 = P 2 V 2 / T 2 Ideal Gas Law PV = nRT

Chapter 4. Aqueous solutions Types of reactions. Parts of Solutions. Solution- homogeneous mixture. Solute- what gets dissolved. Solvent- what does the dissolving. Soluble- Can be dissolved. Miscible- liquids dissolve in each other. Aqueous solutions. Dissolved in water.

Water and Solutions.

Chapter 4 Types of Chemical Reactions and Solution Stoichiometry. 4.1 Water, the Liquid of Life 4.2 Aqueous Solutions: Strong and Weak Electrolytes 4.3 The Composition of Solutions 4.4 Types of Chemical Reactions 4.5 Precipitation Reactions 4.6 Describing Reactions in Solution

CHEMICAL BONDING . Why bond? Atoms try to acquire particularly stable electron configuration (i.e the configuration maximizing binding energy) for their outer electrons  form ions or molecules.

DNA Transfection into Prokaryotic and Eukaryotic Cells. Lily Chan and Tim Johnstone. Transfection: to transfer DNA into cells (either eukaryotic or prokaryotic) not through use of a viral vector. The approaches for eukaryotic and prokaryotic-cell transfection are slightly different.

A. 75. 25. 50. 50. 25. 75. B. C. 50. 75. 25. weight or mole percent C. Ternary Phase Diagrams In ternary systems involving 3 components the Gibb’s phase rule predicts a maximum of: F = C - P + 2 = 3 - 1 + 2 = 4

STOICHIOMETRY. Quantitative relationship among reactants and products are called stoichiometry . Stoichiometry problems are easily solved when amounts of substances are converted from mass (in units of g, kg etc), volume (L), into moles.

Ionic Equations & Reactions. Equations. Molecular equations – show the complete chemical formulas. Does not indicate ionic character Complete ionic equation – shows all ions. Actually how the particles exist in the solution. Steps for Writing Ionic Equations.

Occurrence and Distribution of Metals. Minerals Ore : deposit that contains enough metal that we can extract economically. Most metals are found in minerals. Most important ores are oxide, sulfide and carbonates. Occurrence and Distribution of Metals. Metallurgy