Multiply Charged Ions Spectral Features Isotopic abundances High Mass Region –Brominated Sample The Nitrogen Rule Interpretation Strategy Logical Losses Illogical losses Fragmentation in API Rings and Insaturations Number of Carbons Cleavages –Ion Abundance Cleavages –Simple Mechanisms Electrospray Ionisation ESI Considerations APCI Considerations APPI Considerations LC-MS Structural Information Modes MS/MS Overview MS/MS Experiments Product Ion Scanning Overview Application Precursor Ion Scanning Overview
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different ion in a given sample. This also analytical chemistry technique‚ this testing method uses many different tests to get a reaction that would link with different ions. Ions An Ion is an electrically charged particles that are formed when atoms are added or taken way. Metal atoms have positively charged ions and non-metal atoms have negatively charged ions. To work out how many ions a metal and non-metal should have is simple. Metals should have the same amount of charged ions as the group
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Conductivity of Ionic and Molecular Aqueous Solutions Abstract Aqueous solutions that have free ions have higher conductivity values than solutions with most molecules. The purpose of the experiment was to see if ionic strength of an aqueous solution determines its conductivity. We tested each compound by putting the conductivity probe into its aqueous solution. Then the computer would analyze the data and give us a conductivity value. After each solution was tested‚ we used deionized water
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Conclusion In this lab‚ chemical tests were used to check for the presence of calcium‚ chloride‚ and sulfate ions in water samples. To do this‚ the testers started with five samples: a reference‚ a sample of only the chemical being tested for‚ a control‚ distilled water‚ two home water samples‚ and a school water sample. To test for the ions in the water‚ a chemical that would react with the ion and create a precipitate was added. If the precipitate was not easily visible‚ a Tyndall test was performed
Free Ion Sodium chloride Sodium
Table | Negative Ion (Anions) | Positive Ions (Cations) | Solubility ofCompounds | All negative ions are with | Alkali ions (Na) | Soluble | All negative ions are with | Hydrogen (H+) | Soluble | All negative ions are with | All positive ions | Soluble | Nitrate NO3- ions are with | All positive ions are | Soluble | Acetate CH COO- ions are 3with | All positive ions are | Soluble | Chloride‚ Cl-Bromide Br-Iodide I- | CuAll other positive ions | Low SolubilitySolubleSoluble
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Chemistry All about matter There are three different stages of matter: Solid‚ Liquid and Gas Solid (s): Have a certain volume and shape. “Particles” are arranged in a specific crystalline patter and they only vibrate around fixed positions. Liquid (l): Have a fixed volume‚ but not shape. The particles have some freedom and can move around each other. They collide often. Gas (g): Doesn’t have a fix volume or shape. (Takes up the space where it is) Particles move freely in all space available
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CHAPTER-23 HW. Rahaf AlBathi 121114 Question 1 The electron configuration of a Ni2+ ion is: | A) [Ar]4s23d8 | | B) [Ar]4s23d6 | | C) [Ar]3d8 | | D) [Ar]3d6 | Question 2 The Fe3+ ion has _____ electrons in 3d orbitals. | A) 6 | | B) 5 | | C) 4 | | D) 3 | | E) 2 | Question 3 A ligand is: | A) a molecule or ion that has at least one lone pair of electrons | | B) a nucleophile | | C) a Lewis base | | D) part of a coordination compound |
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Christy Chan (5) BIOLOGY LAB REPORT Investigation of the effect of metal ions on enzyme activity Objective To study the effect of two heavy metal ions‚ lead (II) ions and silver ions on the enzyme activity of invertase. Introduction Hypothesis: The rate of enzyme reaction of invertase decreases and the reaction eventually stops as the heavy metal ions inhibit the enzyme reactions. Biological principle: Heavy metal ions are non-competitive inhibitors. They do not compete with the substrates
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experiment‚ equilibrium will be examines in the reaction beteween the iron (III) ion and the thiocyanate ion: Fe3+ (aq) + SCN- (aq) ------ FeSCN2+ (aq) The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore‚ the shift in the reaction can followed by noting a change in the intensity of the clood red color‚ which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right‚ the blood red color will get darker
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The solution in the test tube from step 9 contains the Cu2+ ions. To this solution‚ add 1 mL of 3% H2O2. Boil the solution down to a volume of about 1 mL. Now add 6 M HCl until the pH reaches 0.5. Once the pH has been lowered to 0.5‚ add 1 mL of 1 M CH3CSNH2 (thioacetamide) to the test tube. 15. Heat the
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