lab-6-chrmatography
... Mikhail Tswett, Russian, 1872-1919 In 1906 Tswett used to chromatography to separate plant pigments He called the new technique chromatography because the result of the analysis was 'written in color' Most materials in our surroundings are mixtures of two or more components. Mixtures are either h ...
... Mikhail Tswett, Russian, 1872-1919 In 1906 Tswett used to chromatography to separate plant pigments He called the new technique chromatography because the result of the analysis was 'written in color' Most materials in our surroundings are mixtures of two or more components. Mixtures are either h ...
The Complete Notes - Joliet Junior College
... Physical and Chemical Properties – what’s the difference? Analogy: We all posses ‘as is’ physical properties, or characteristics, that define us. For example, Dr. Mills is 5’11” and has green eyes. As with people, each chemical also possesses a unique set of ‘as is’ physical properties that define ...
... Physical and Chemical Properties – what’s the difference? Analogy: We all posses ‘as is’ physical properties, or characteristics, that define us. For example, Dr. Mills is 5’11” and has green eyes. As with people, each chemical also possesses a unique set of ‘as is’ physical properties that define ...
WJEC Eduqas A Level Chemistry specification
... forces between molecules being much weaker than covalent (and ionic) bonds ...
... forces between molecules being much weaker than covalent (and ionic) bonds ...
Word - Chemistry and More
... f) Is this reaction endothermic or exothermic? 12. (Chapter 9) Barium hydroxide precipitates when it is formed in a double replacement reaction. a) Write a balanced molecular equation for the formation of barium hydroxide precipitate from barium nitrate and sodium hydroxide. b) Calculate the mass of ...
... f) Is this reaction endothermic or exothermic? 12. (Chapter 9) Barium hydroxide precipitates when it is formed in a double replacement reaction. a) Write a balanced molecular equation for the formation of barium hydroxide precipitate from barium nitrate and sodium hydroxide. b) Calculate the mass of ...
Document
... • two of them form a compound that is insoluble in water • two of them react to form a gas that escapes from the reaction mixture as bubbles, as for example when we mix aqueous solutions of sodium bicarbonate and hydrochloric acid ...
... • two of them form a compound that is insoluble in water • two of them react to form a gas that escapes from the reaction mixture as bubbles, as for example when we mix aqueous solutions of sodium bicarbonate and hydrochloric acid ...
chemistry-c7-what-you-should
... I can translate between molecular, structural and ball-andstick representations of simple organic molecules I understand that alkanes burn in plenty of air to give carbon dioxide and water I understand that alkanes are unreactive towards aqueous reagents because they contain only C—C and C—H bonds, ...
... I can translate between molecular, structural and ball-andstick representations of simple organic molecules I understand that alkanes burn in plenty of air to give carbon dioxide and water I understand that alkanes are unreactive towards aqueous reagents because they contain only C—C and C—H bonds, ...
unit (4) calculations and chemical reactions
... There are two common double-replacement reactions that we will study in this course: 1. Precipitation reactions 2. Acid-base reactions We will study the precipitation reaction in the next section, and the acid-base reaction in ...
... There are two common double-replacement reactions that we will study in this course: 1. Precipitation reactions 2. Acid-base reactions We will study the precipitation reaction in the next section, and the acid-base reaction in ...
Document
... Precipitation Reactions Water is a good solvent for ionic compounds because it is a polar molecule. The polarity of water results from electron distributions within the molecule. The oxygen atom has an attraction for the hydrogen atoms’ electrons and is therefore partially negative compared to hydr ...
... Precipitation Reactions Water is a good solvent for ionic compounds because it is a polar molecule. The polarity of water results from electron distributions within the molecule. The oxygen atom has an attraction for the hydrogen atoms’ electrons and is therefore partially negative compared to hydr ...
aq - HCC Learning Web
... Li > K > Ba > Sr > Ca > Na > Mg > Al > Mn > Zn > Fe > Cd > Co > Ni > Sn > Pb > (H) > Cu > Ag > Hg > Au • Hydrogen (H) is included in the series to show which metals react with acids – Cu, Ag, Hg, Au do not (no reaction, NR); others do • Examples: Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s) Cu(s) + FeSO4(a ...
... Li > K > Ba > Sr > Ca > Na > Mg > Al > Mn > Zn > Fe > Cd > Co > Ni > Sn > Pb > (H) > Cu > Ag > Hg > Au • Hydrogen (H) is included in the series to show which metals react with acids – Cu, Ag, Hg, Au do not (no reaction, NR); others do • Examples: Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s) Cu(s) + FeSO4(a ...
materials required/recommended for this paper
... The phosphoric acid fuel cell (PAFC) uses gaseous oxygen and hydrogen to produce electricity. The cell is named so, because the electrolyte is an extremely concentrated solution of phosphoric acid. Both electrodes are made from porous carbon, which is coated with a platinum catalyst. The cell operat ...
... The phosphoric acid fuel cell (PAFC) uses gaseous oxygen and hydrogen to produce electricity. The cell is named so, because the electrolyte is an extremely concentrated solution of phosphoric acid. Both electrodes are made from porous carbon, which is coated with a platinum catalyst. The cell operat ...
406 K (English version)
... The modern theory of the structure of the atom Origin of Quantum Mechanics – Hypothesis of Louis de Broglie – Schroedinger’s Equation – d’Heisenberg’s Inequality – The concept of the atomic orbit – Periodic classification of elements Mendel Classification – properties of each group – periodic table ...
... The modern theory of the structure of the atom Origin of Quantum Mechanics – Hypothesis of Louis de Broglie – Schroedinger’s Equation – d’Heisenberg’s Inequality – The concept of the atomic orbit – Periodic classification of elements Mendel Classification – properties of each group – periodic table ...
Inorganic and organic chemistry 2
... The substance that could carry out a reduction of vanadium must be on the right-hand side of the half-equations, so it cannot be iodine. Sulfur dioxide being oxidised to sulfate(VI) ions has a potential of −0.17 V. Adding this to each of the potentials for the vanadium half-equations gives +0.83 V ( ...
... The substance that could carry out a reduction of vanadium must be on the right-hand side of the half-equations, so it cannot be iodine. Sulfur dioxide being oxidised to sulfate(VI) ions has a potential of −0.17 V. Adding this to each of the potentials for the vanadium half-equations gives +0.83 V ( ...
Towards a Theory of Organizations
... In this contribution we will only concentrate on the static structure of organizations and will neglect their dynamics. For this reason we introduce the concept of an algebraic chemistry. An algebraic chemistry is a specific artificial chemistry without any dynamics. Definition 2.1. (algebraic chemi ...
... In this contribution we will only concentrate on the static structure of organizations and will neglect their dynamics. For this reason we introduce the concept of an algebraic chemistry. An algebraic chemistry is a specific artificial chemistry without any dynamics. Definition 2.1. (algebraic chemi ...
unit_k_reading_notes
... Let us begin with defining stoichiometry. Most texts break it down into 2 categories. The first one we’ve already seen—it’s composition stoichiometry, which is the study of mass relationships of elements in compounds. Examples of this include calculating percentage composition, and determination of ...
... Let us begin with defining stoichiometry. Most texts break it down into 2 categories. The first one we’ve already seen—it’s composition stoichiometry, which is the study of mass relationships of elements in compounds. Examples of this include calculating percentage composition, and determination of ...
Synthesis of monoselenanedisulfanediphosphonate by the reaction
... the amount of which is in proportion to the amount of selenite ions, was again titrated with thiosulfate. Selenium was also determined iodometrically in another way. A sample was oxidized by bromine to selenous acid, which has been determined by the reaction (8). The sample was dissolved in a mixtur ...
... the amount of which is in proportion to the amount of selenite ions, was again titrated with thiosulfate. Selenium was also determined iodometrically in another way. A sample was oxidized by bromine to selenous acid, which has been determined by the reaction (8). The sample was dissolved in a mixtur ...
Document
... CHECK The units of the answer are correct. The magnitude of the answer (25.8 g) is less than the initial mass of CO2 (37.8 g). This is reasonable because each carbon in CO2 has two oxygen atoms associated with it, while in C6H12O6 each carbon has only one oxygen atom associated with it and two hydro ...
... CHECK The units of the answer are correct. The magnitude of the answer (25.8 g) is less than the initial mass of CO2 (37.8 g). This is reasonable because each carbon in CO2 has two oxygen atoms associated with it, while in C6H12O6 each carbon has only one oxygen atom associated with it and two hydro ...
Inorganic chemistry
Inorganic chemistry deals with the synthesis and behavior of inorganic and organometallic compounds. This field covers all chemical compounds except the myriad organic compounds (carbon based compounds, usually containing C-H bonds), which are the subjects of organic chemistry. The distinction between the two disciplines is far from absolute, and there is much overlap, most importantly in the sub-discipline of organometallic chemistry. It has applications in every aspect of the chemical industry–including catalysis, materials science, pigments, surfactants, coatings, medicine, fuel, and agriculture.