Chemistry 125/126 Hourly 1 Review Notes and Questions to check
... tube (B). The crystals dissolve. Write a balanced equation for the dissociation of FeCl3(s). Balanced equation for the dissociation of FeCl3 into ions when placed in water: FeCl3(s) → ___________ + __________ water You now mix the contents of test tube A with the contents of test tube B and add hexa ...
... tube (B). The crystals dissolve. Write a balanced equation for the dissociation of FeCl3(s). Balanced equation for the dissociation of FeCl3 into ions when placed in water: FeCl3(s) → ___________ + __________ water You now mix the contents of test tube A with the contents of test tube B and add hexa ...
9 free IB Chem labs (sent to OCC) - VicPark-IBRoundtable-2009
... How are you going to collect this sample to as many significant figures as possible? 5. Obtain at least 8cm of Mg ribbon. 6. When you are ready with the stopwatch and the tubing, place the Mg inside the flask. Immediately start timing, cover the flask with the bung and hold the tubing inside the cyl ...
... How are you going to collect this sample to as many significant figures as possible? 5. Obtain at least 8cm of Mg ribbon. 6. When you are ready with the stopwatch and the tubing, place the Mg inside the flask. Immediately start timing, cover the flask with the bung and hold the tubing inside the cyl ...
peptide into the biologically active conformation, so promoting its
... mono- and dinuclear copper(I) centers are of interest because of their relevance to the copper proteins such as hemocyanin, a dioxygen carrier, and tyrosinase and dopamine beta-hydroxylase which are monooxygenases involved in oxygen activation [1]. Such model studies may also help in the development ...
... mono- and dinuclear copper(I) centers are of interest because of their relevance to the copper proteins such as hemocyanin, a dioxygen carrier, and tyrosinase and dopamine beta-hydroxylase which are monooxygenases involved in oxygen activation [1]. Such model studies may also help in the development ...
Experiment 11 CHEMICAL REACTIONS
... A single replacement reaction will occur only if the element reacting is more “ active” than the element it is replacing. If the element reacting is a metal, it re places a metal (or hydrogen) in the compound. However, the reaction will occur only if a more active metal is replacing a less active me ...
... A single replacement reaction will occur only if the element reacting is more “ active” than the element it is replacing. If the element reacting is a metal, it re places a metal (or hydrogen) in the compound. However, the reaction will occur only if a more active metal is replacing a less active me ...
ACTIVATION ENERGY VARIATION DURING IGNITION OF
... At constant pressure (100kPa) the following results were obtained from the plot lnW = f(1/T) (Fig. 2): the slope = (9.06r1.36)×103, the intercept = –3.03r1.26 with the correlation coefficient 0.968. The corresponding activation energy of the gas phase ignition process is Ea = 75.3 kJ.mol–1 which can ...
... At constant pressure (100kPa) the following results were obtained from the plot lnW = f(1/T) (Fig. 2): the slope = (9.06r1.36)×103, the intercept = –3.03r1.26 with the correlation coefficient 0.968. The corresponding activation energy of the gas phase ignition process is Ea = 75.3 kJ.mol–1 which can ...
Factors that affect the rate of reactions
... In your body, or in biology, a catalyst is called an____________. There are 1000’s of enzymes that control everything in your body. Enzymes are large organic molecules. Ex, Saliva, contains the enzyme amylase. Amylase helps digest carbohydrates in your mouth. Catalysts have the ability to __________ ...
... In your body, or in biology, a catalyst is called an____________. There are 1000’s of enzymes that control everything in your body. Enzymes are large organic molecules. Ex, Saliva, contains the enzyme amylase. Amylase helps digest carbohydrates in your mouth. Catalysts have the ability to __________ ...
1. Write the balanced equation for the combustion of butane (C4H10
... following molar ratios should be. a. C4H10 / O2 b. O2 / CO2 c. O2 / H2O d. C4H10 / CO2 e. C4H10 / H2O 2. How many moles of O2 can be produced by the decomposition of 12.00 moles of KClO3? 3. Potassium chloride is formed from its constituent elements. How many grams of KCl is produced from 2.50 g of ...
... following molar ratios should be. a. C4H10 / O2 b. O2 / CO2 c. O2 / H2O d. C4H10 / CO2 e. C4H10 / H2O 2. How many moles of O2 can be produced by the decomposition of 12.00 moles of KClO3? 3. Potassium chloride is formed from its constituent elements. How many grams of KCl is produced from 2.50 g of ...
Enthalpy Review Questions
... to a vapor at that temperature? (The specific heat of liquid ethanol is 2.44 J/g K, and the enthalpy of vaporization is 38.56 kJ/mol.) 3. Methanol, CH 3OH, is a possible automobile fuel. The alcohol produces energy in a combustion reaction with O2: 2CH3OH(g) + 502 (g) sssssd 2 CO2(g) + 4 H2O(g) A 0. ...
... to a vapor at that temperature? (The specific heat of liquid ethanol is 2.44 J/g K, and the enthalpy of vaporization is 38.56 kJ/mol.) 3. Methanol, CH 3OH, is a possible automobile fuel. The alcohol produces energy in a combustion reaction with O2: 2CH3OH(g) + 502 (g) sssssd 2 CO2(g) + 4 H2O(g) A 0. ...
Document
... (a) Zinc is made by reducing zinc oxide. In 1695 Homberg obtained zinc from calamine, zinc carbonate. At present zinc is extracted from the ore, zinc blende. (i) ...
... (a) Zinc is made by reducing zinc oxide. In 1695 Homberg obtained zinc from calamine, zinc carbonate. At present zinc is extracted from the ore, zinc blende. (i) ...
IB:Enthalpy Review Questions
... d) If the bonds made are less strong than those broken, will the enthalpy change be positive or negative? e) Will the formation of Cl2O from its elements be and endothermic or exothermic process? 3. When 8.0 g of ammonium nitrate was dissolved in 100 cm3 of water the temperature fell from 19.0
... d) If the bonds made are less strong than those broken, will the enthalpy change be positive or negative? e) Will the formation of Cl2O from its elements be and endothermic or exothermic process? 3. When 8.0 g of ammonium nitrate was dissolved in 100 cm3 of water the temperature fell from 19.0
AP Chemistry Kinetics WS 2 (Chapter 16) Integrated Rate Laws
... 2. The decomposition of NH3 gas on tungsten metal follows zero-order kinetics with a rate constant of 3.4 x 10-6 mol L-1s-1. If the initial concentration of NH3(g) is 0.0068 M, what will be the concentration after 1000s? 3. The decomposition of hydrogen peroxide is first-order in H2O2. a. How long w ...
... 2. The decomposition of NH3 gas on tungsten metal follows zero-order kinetics with a rate constant of 3.4 x 10-6 mol L-1s-1. If the initial concentration of NH3(g) is 0.0068 M, what will be the concentration after 1000s? 3. The decomposition of hydrogen peroxide is first-order in H2O2. a. How long w ...
Chemistry 1
... a) Explain how the following calculation helps to determine the limiting reactant for this reaction. Tell what the limiting reactant is. 1 mol CO 1 mol H 2O 18.0 g H 2O 27.8 g CO ...
... a) Explain how the following calculation helps to determine the limiting reactant for this reaction. Tell what the limiting reactant is. 1 mol CO 1 mol H 2O 18.0 g H 2O 27.8 g CO ...
Health and Safety Alert
... A significant contributing cause of this event appears to be a build-up of pressure within the fuel container due to outside surface temperatures of over 35 ºC. Additionally, the refuelling operation was carried out close to an open burning flame used as part of the thermite welding activity close b ...
... A significant contributing cause of this event appears to be a build-up of pressure within the fuel container due to outside surface temperatures of over 35 ºC. Additionally, the refuelling operation was carried out close to an open burning flame used as part of the thermite welding activity close b ...
IB Chemistry Summer Assignment Summer 2013
... b. Starting with this same amount of aluminum, how many grams of zinc nitrate will be needed? ...
... b. Starting with this same amount of aluminum, how many grams of zinc nitrate will be needed? ...
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education
... endothermic? Give a reason for your choice. ...
... endothermic? Give a reason for your choice. ...
PreAP Chemistry Reaction Rules
... The oxidation number of the metal stays the same from reactant to product Hint: if water is involved, write it as HOH *Probably will NOT be a Redox Reaction Single Replacement = 1 element and 1 compound yield 1 different element and 1 different compound Use the preferred oxidation number for the met ...
... The oxidation number of the metal stays the same from reactant to product Hint: if water is involved, write it as HOH *Probably will NOT be a Redox Reaction Single Replacement = 1 element and 1 compound yield 1 different element and 1 different compound Use the preferred oxidation number for the met ...
Document
... a metal ion are known as ligands. • Many ligands are known ranging from monoatomic ions such as chloride to huge protein molecules. • Examples include NH3, H2O, NH2CH2CH2NH2 (diaminoethane, a ...
... a metal ion are known as ligands. • Many ligands are known ranging from monoatomic ions such as chloride to huge protein molecules. • Examples include NH3, H2O, NH2CH2CH2NH2 (diaminoethane, a ...
Investigation of Nickel and Copper Coordination Complexes
... Typically, as ligand is added to the solution of metal ion, ML is formed first. As the addition of ligand is continued, the ML2 concentration rises, while the ML concentration drops. Then ML3 becomes dominant with ML and ML2 becoming unimportant. This process continues until the highest complex, ML6 ...
... Typically, as ligand is added to the solution of metal ion, ML is formed first. As the addition of ligand is continued, the ML2 concentration rises, while the ML concentration drops. Then ML3 becomes dominant with ML and ML2 becoming unimportant. This process continues until the highest complex, ML6 ...
F321 module 1 Practice 3
... Calculate the mass of barium metal that could be produced from reduction of 500 g of barium oxide using this method. answer = ............................... g [Total 4 marks] ...
... Calculate the mass of barium metal that could be produced from reduction of 500 g of barium oxide using this method. answer = ............................... g [Total 4 marks] ...
Date - PetyaPisanScienceAQ
... Physical Differences: Magnesium is not a good conductor of electricity but copper is a great conductor of electricity and that is why they use it in cables. ...
... Physical Differences: Magnesium is not a good conductor of electricity but copper is a great conductor of electricity and that is why they use it in cables. ...
Iron Based Catalysts
... decided to test different iron based catalysts, such as iron oxides and iron supported catalysts. To start with this study, iron oxide nanoparticles were synthesized and characterized (see Annex VII). Nevertheless, no interesting catalytic activity results were obtained. Furthermore, the oxidative c ...
... decided to test different iron based catalysts, such as iron oxides and iron supported catalysts. To start with this study, iron oxide nanoparticles were synthesized and characterized (see Annex VII). Nevertheless, no interesting catalytic activity results were obtained. Furthermore, the oxidative c ...
Thermite
Thermite is a pyrotechnic composition of metal powder fuel and metal oxide. When ignited by heat, thermite undergoes an exothermic reduction-oxidation (redox) reaction. Most varieties are not explosive but can create brief bursts of high temperature in a small area. Its form of action is similar to that of other fuel-oxidizer mixtures, such as black powder.Thermites have diverse compositions. Fuels include aluminium, magnesium, titanium, zinc, silicon, and boron. Aluminium is common because of its high boiling point and low cost. Oxidizers include bismuth(III) oxide, boron(III) oxide, silicon(IV) oxide, chromium(III) oxide, manganese(IV) oxide, iron(III) oxide, iron(II,III) oxide, copper(II) oxide, and lead(II,IV) oxide.The reaction is used for thermite welding, often used to join rail tracks. Thermites have also been used in metal refining, demolition of munitions, and in incendiary weapons. Some thermite-like mixtures are used as pyrotechnic initiators in fireworks.