IChO 2012
... For example, aluminum chloride (AlCl 3) is a catalyst in Friedel-Crafts alkylations. Organoaluminum compounds, such as Al 2(CH3)6 and [(C2H5)2AlCl]2, are used in organic synthesis and as components of Ziegler-Natta polymerization catalysts. A. Aluminum Halides. a) In the solid state, aluminum chlori ...
... For example, aluminum chloride (AlCl 3) is a catalyst in Friedel-Crafts alkylations. Organoaluminum compounds, such as Al 2(CH3)6 and [(C2H5)2AlCl]2, are used in organic synthesis and as components of Ziegler-Natta polymerization catalysts. A. Aluminum Halides. a) In the solid state, aluminum chlori ...
Stoichiometry - Madison Public Schools
... • By definition, these are the mass of 1 mole of a substance (i.e., g/mol) – The molar mass of an element is the weighted average mass of the isotopes of an element that we find on the periodic ...
... • By definition, these are the mass of 1 mole of a substance (i.e., g/mol) – The molar mass of an element is the weighted average mass of the isotopes of an element that we find on the periodic ...
Chemistry
... Chemistry is about the study of matter, its interactions and transformations. At a macroscopic level, we observe matter and its interactions everywhere in our daily life. The microscopic level looks at the structure of matter that gives rise to these interactions. At O-Level, students have been intr ...
... Chemistry is about the study of matter, its interactions and transformations. At a macroscopic level, we observe matter and its interactions everywhere in our daily life. The microscopic level looks at the structure of matter that gives rise to these interactions. At O-Level, students have been intr ...
CHAPTER 4: CHEMICAL QUANTITIES and AQUEOUS REACTIONS
... Solute (solid, liquid or gas) + Water (solvent) → Aqueous solution. If the aqueous solution conducts electric current, the solute is called as electrolytes. Electrolytes are classified into 3 types. ...
... Solute (solid, liquid or gas) + Water (solvent) → Aqueous solution. If the aqueous solution conducts electric current, the solute is called as electrolytes. Electrolytes are classified into 3 types. ...
Document
... 1. How many moles of O2 can be produced by letting 12.00 moles of KClO3 react? 2. How many moles of KClO3 are needed to produce 5.45 moles of KCl? 3. If 10.4 moles of KCl were produced, how many moles of O2 were also produced? 4. How many moles of KCl can be produced by letting 7.5 moles of KClO3 de ...
... 1. How many moles of O2 can be produced by letting 12.00 moles of KClO3 react? 2. How many moles of KClO3 are needed to produce 5.45 moles of KCl? 3. If 10.4 moles of KCl were produced, how many moles of O2 were also produced? 4. How many moles of KCl can be produced by letting 7.5 moles of KClO3 de ...
Stoichiometry: Calculations with Chemical Formulas and Equations
... – C is determined from the mass of CO2 produced – H is determined from the mass of H2O produced – O is determined by difference after the C and H have been determined Stoichiometry ...
... – C is determined from the mass of CO2 produced – H is determined from the mass of H2O produced – O is determined by difference after the C and H have been determined Stoichiometry ...
Document
... 12. What is the percent yield for the reaction shown if 1 mole of O2 produces 9.0 grams of water? 2 H2 + O2 → 2 H2O 1 mole of O2 can at most produce 2 moles of water (theoretical yield is 36 g since molar mass of water is about 18 g/mol. So %yield = (9g/36g)x100=25% a) 400% ...
... 12. What is the percent yield for the reaction shown if 1 mole of O2 produces 9.0 grams of water? 2 H2 + O2 → 2 H2O 1 mole of O2 can at most produce 2 moles of water (theoretical yield is 36 g since molar mass of water is about 18 g/mol. So %yield = (9g/36g)x100=25% a) 400% ...
Review Packet Answers - Bremerton School District
... Problem solving: Learn when to make an approximation (needed for multiple choice and free response questions!). 5% rules usually works when value of K is 10-2 or smaller than value of known concentrations. Example: ...
... Problem solving: Learn when to make an approximation (needed for multiple choice and free response questions!). 5% rules usually works when value of K is 10-2 or smaller than value of known concentrations. Example: ...
LaBrake, Fundamentals Diagnostic Questions
... b) mercury, M c) iodine, I d) oxygen, O e) potassium, K 40. Which of the following common names is not correctly matched with the formula? a) NH3, ammonia b) H2O, water c) C2H2, dicarbon dihyrdide d) C2H4, ethylene e) N2O, nitrous oxide 41. Which has more molecules: a mole of H2O or a mole of O2? a) ...
... b) mercury, M c) iodine, I d) oxygen, O e) potassium, K 40. Which of the following common names is not correctly matched with the formula? a) NH3, ammonia b) H2O, water c) C2H2, dicarbon dihyrdide d) C2H4, ethylene e) N2O, nitrous oxide 41. Which has more molecules: a mole of H2O or a mole of O2? a) ...
Basic Stoichometry
... you made a batch of cookies and used way too many eggs, or not enough sugar. YUCK! In chemistry, reactions proceed with very specific recipes. The study of these recipes is stoichiometry. When the reactants are present in the correct amounts, the reaction will produce products. What happens if there ...
... you made a batch of cookies and used way too many eggs, or not enough sugar. YUCK! In chemistry, reactions proceed with very specific recipes. The study of these recipes is stoichiometry. When the reactants are present in the correct amounts, the reaction will produce products. What happens if there ...
chapter4-bur.2917051..
... electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a partial negative charge on the oxygen atom (-) and partial posi ...
... electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a partial negative charge on the oxygen atom (-) and partial posi ...
The Equilibrium Constant K
... a) The system will shift away from the added gaseous component. If a component is removed, the opposite effect occurs. b) Addition of inert gas does not affect the equilibrium position. The addition of inert gas increases the total pressure, but has no effect on the concentration or the partial pres ...
... a) The system will shift away from the added gaseous component. If a component is removed, the opposite effect occurs. b) Addition of inert gas does not affect the equilibrium position. The addition of inert gas increases the total pressure, but has no effect on the concentration or the partial pres ...
Equilibrium
... Chemical equilibrium can be attained whether the reaction begins with all reactants and no products, all products and no reactants, or some of both. Illustrated in the Figure 1.2 are the changes in the concentrations of H2 , I2 , and HI for two different initial reaction mixtures. In the situation d ...
... Chemical equilibrium can be attained whether the reaction begins with all reactants and no products, all products and no reactants, or some of both. Illustrated in the Figure 1.2 are the changes in the concentrations of H2 , I2 , and HI for two different initial reaction mixtures. In the situation d ...
Chemistry
... a) Give steps (using correct terms for glassware, chemicals, and lab equipment) for the experiment you need to perform in order to determine the concentration of the HCl. b) What is this type of experiment called? c) Indicate what measurements need to be taken (you do not have to discuss any calcula ...
... a) Give steps (using correct terms for glassware, chemicals, and lab equipment) for the experiment you need to perform in order to determine the concentration of the HCl. b) What is this type of experiment called? c) Indicate what measurements need to be taken (you do not have to discuss any calcula ...