Precision, accuracy and significant figures
... For a quantity to have an exact value, it must either be defined or obtained by counting. All measured quantities have an inherent uncertainty because all instruments used to make measurements have limitations, and the people operating the instruments have varying skills. The accuracy of a measureme ...
... For a quantity to have an exact value, it must either be defined or obtained by counting. All measured quantities have an inherent uncertainty because all instruments used to make measurements have limitations, and the people operating the instruments have varying skills. The accuracy of a measureme ...
Lectures on Chapter 4, Part 2 Powerpoint 97 Document
... SO42-(aq) + 2 e Add water to the reactant side to supply an oxygen and add two protons to the product side that will remain plus the two electrons. SO32-(aq) + H2O(l) SO42-(aq) + 2 H+(aq) + 2 e Reduction: MnO4-(aq) + 3 eMnO2 (s) Add water to the product side to take up the extra oxygen from Mn cpds, ...
... SO42-(aq) + 2 e Add water to the reactant side to supply an oxygen and add two protons to the product side that will remain plus the two electrons. SO32-(aq) + H2O(l) SO42-(aq) + 2 H+(aq) + 2 e Reduction: MnO4-(aq) + 3 eMnO2 (s) Add water to the product side to take up the extra oxygen from Mn cpds, ...
Chapter 9: Non-aqueous media
... The relative permittivity of NH3 is considerably less than that of H2 O and, as a consequence, the ability of liquid NH3 to dissolve ionic compounds is generally less than that of water. Exceptions include ½NH4 þ salts, iodides and nitrates which are usually readily soluble. For example, AgI, which ...
... The relative permittivity of NH3 is considerably less than that of H2 O and, as a consequence, the ability of liquid NH3 to dissolve ionic compounds is generally less than that of water. Exceptions include ½NH4 þ salts, iodides and nitrates which are usually readily soluble. For example, AgI, which ...
Transition Metals
... Co-ordinate bonding is involved in complex formation. Co-ordinate bonding is when the shared pair of electrons in the covalent bond come from only one of the bonding atoms. Co-ordination number: The number of co-ordinate bonds formed to a central metal ion ligands can be unidentate (e.g. H2O, NH3 an ...
... Co-ordinate bonding is involved in complex formation. Co-ordinate bonding is when the shared pair of electrons in the covalent bond come from only one of the bonding atoms. Co-ordination number: The number of co-ordinate bonds formed to a central metal ion ligands can be unidentate (e.g. H2O, NH3 an ...
CHEMISTRY 2202
... Select the letter of the correct response from those provided. EITHER shade the letter on your computer scorable card OR place the letter in the blank provided on your Multiple Choice Answer Sheet, whichever format is being used by your school for this exam. Do ALL questions in this section. ...
... Select the letter of the correct response from those provided. EITHER shade the letter on your computer scorable card OR place the letter in the blank provided on your Multiple Choice Answer Sheet, whichever format is being used by your school for this exam. Do ALL questions in this section. ...
Unit 1
... equations, calculations, concentrations, and experiments within the context of everyday phenomena are the focus of this unit on solutions and equilibrium. The context might be hemoglobin at high altitudes, ammonia in the Haber process, CaCO3 in caves, acids corroding metals, sodium carbonate in the ...
... equations, calculations, concentrations, and experiments within the context of everyday phenomena are the focus of this unit on solutions and equilibrium. The context might be hemoglobin at high altitudes, ammonia in the Haber process, CaCO3 in caves, acids corroding metals, sodium carbonate in the ...
Chapter 4 Chemical Quantities and Aqueous Reactions
... When ionic compounds dissolve in water, the anions and cations are separated from each other. This is called dissociation. Na2S(aq) 2 Na+(aq) + S2–(aq) When compounds containing polyatomic ions dissociate, the polyatomic group stays together as one ion. Na2SO4(aq) 2 Na+(aq) + SO42−(aq) When stro ...
... When ionic compounds dissolve in water, the anions and cations are separated from each other. This is called dissociation. Na2S(aq) 2 Na+(aq) + S2–(aq) When compounds containing polyatomic ions dissociate, the polyatomic group stays together as one ion. Na2SO4(aq) 2 Na+(aq) + SO42−(aq) When stro ...
Chapter 4 Lecture Notes in PowerPoint
... When ionic compounds dissolve in water, the anions and cations are separated from each other. This is called dissociation. Na2S(aq) 2 Na+(aq) + S2–(aq) When compounds containing polyatomic ions dissociate, the polyatomic group stays together as one ion. Na2SO4(aq) 2 Na+(aq) + SO42−(aq) When stro ...
... When ionic compounds dissolve in water, the anions and cations are separated from each other. This is called dissociation. Na2S(aq) 2 Na+(aq) + S2–(aq) When compounds containing polyatomic ions dissociate, the polyatomic group stays together as one ion. Na2SO4(aq) 2 Na+(aq) + SO42−(aq) When stro ...
PDF - mockies – Mockiesgateacademy
... Eg. Consider the following reaction 2 H2 + O2 → 2H2O In this reaction one molecule of oxygen reacts with two molecules of hydrogen. So it would be desirable to take the molecules of H2 and oxygen in the ratio 2:1, so that the reactants are completely consumed during the reaction. But atoms and mole ...
... Eg. Consider the following reaction 2 H2 + O2 → 2H2O In this reaction one molecule of oxygen reacts with two molecules of hydrogen. So it would be desirable to take the molecules of H2 and oxygen in the ratio 2:1, so that the reactants are completely consumed during the reaction. But atoms and mole ...
HSC Chemistry Syllabus Notes 2007
... Fossil fuels provide both energy and raw materials such as ethylene, for the production of other substances ............................................ 20 Some scientists research the extraction of materials from biomass to reduce our dependence on fossil fuels ..................................... ...
... Fossil fuels provide both energy and raw materials such as ethylene, for the production of other substances ............................................ 20 Some scientists research the extraction of materials from biomass to reduce our dependence on fossil fuels ..................................... ...
laman web smk raja perempuan, ipoh
... the homologous series and the melting and boiling points 14. explain the attractive forces between molecules (van der Waals forces and hydrogen bonding) l5. explain the meaning of Lewis acids and bases in terms of charge / electron density 16. explain why many organic compounds containing oxygen / n ...
... the homologous series and the melting and boiling points 14. explain the attractive forces between molecules (van der Waals forces and hydrogen bonding) l5. explain the meaning of Lewis acids and bases in terms of charge / electron density 16. explain why many organic compounds containing oxygen / n ...
04 Reactions in Aqueous Solution
... • Solutions are defined as homogeneous mixtures of two or more pure substances. • The solvent is present in greatest abundance. • All other substances are solutes. • When water is the solvent, the solution is called an aqueous solution. Aqueous Reactions © 2015 Pearson Education, Inc. ...
... • Solutions are defined as homogeneous mixtures of two or more pure substances. • The solvent is present in greatest abundance. • All other substances are solutes. • When water is the solvent, the solution is called an aqueous solution. Aqueous Reactions © 2015 Pearson Education, Inc. ...
PDF - Chemistry - University of Canterbury
... related, but in a somewhat different category, are the biological sciences, such as biochemistry, biotechnology, ecology and genetics. There is no sharp distinction between the physical and biological sciences, indeed they often overlap with each other – for example, chemical reactions are the basis ...
... related, but in a somewhat different category, are the biological sciences, such as biochemistry, biotechnology, ecology and genetics. There is no sharp distinction between the physical and biological sciences, indeed they often overlap with each other – for example, chemical reactions are the basis ...
Stoichiometry - coercingmolecules
... e. How many formula units of sodium ascorbate are present? f. How many atoms of Na are present? ...
... e. How many formula units of sodium ascorbate are present? f. How many atoms of Na are present? ...
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.