chapter 6 - thermochemistry
... That is, 2.9 kJ of heat is produced when 0.0500 mol H + ions is reacted. The molar enthalpy for the reaction is -2.9 kJ/(0.0500 mol) = -58 kJ/mol A "bomb-calorimeter" is a type of calorimeter used to measure the amount of heat produced in a combustion reaction. It measures the heat of reaction carri ...
... That is, 2.9 kJ of heat is produced when 0.0500 mol H + ions is reacted. The molar enthalpy for the reaction is -2.9 kJ/(0.0500 mol) = -58 kJ/mol A "bomb-calorimeter" is a type of calorimeter used to measure the amount of heat produced in a combustion reaction. It measures the heat of reaction carri ...
1st-Year-ch-wise-test
... (6)Paschen, Brackette and Pfund series fall which region (a) ultraviolet region (b) I.R region (c) visible region (d) X-rays region (7) The volume of 1 mole of a gas at STP (a) 22.414 dm3 (b) 22414 dm3 ...
... (6)Paschen, Brackette and Pfund series fall which region (a) ultraviolet region (b) I.R region (c) visible region (d) X-rays region (7) The volume of 1 mole of a gas at STP (a) 22.414 dm3 (b) 22414 dm3 ...
Saturday Study Session 1 1st Class Reactions
... . A 0.345 g sample of anhydrous BeC2O4, which contains an inert impurity, was dissolved in sufficient Water to produce 100.0 mL of solution. A 20.0 mL portion of this solution was titrated with KMnO4(aq). The balanced equation for the reaction that occurs is: 16H+(aq) + 2 MnO4-(aq) + 5 C2O42-(aq) ...
... . A 0.345 g sample of anhydrous BeC2O4, which contains an inert impurity, was dissolved in sufficient Water to produce 100.0 mL of solution. A 20.0 mL portion of this solution was titrated with KMnO4(aq). The balanced equation for the reaction that occurs is: 16H+(aq) + 2 MnO4-(aq) + 5 C2O42-(aq) ...
Chem13 News - Mattson Creighton
... water sample. Ozone generation commences immediately when the power supply is plugged in. We removed 3 mL samples of water with a disposable pipet after 5, 15 and 30 minutes. As before, the samples were added to fresh agar dishes, covered, and swirled. The entire process was repeated for the second ...
... water sample. Ozone generation commences immediately when the power supply is plugged in. We removed 3 mL samples of water with a disposable pipet after 5, 15 and 30 minutes. As before, the samples were added to fresh agar dishes, covered, and swirled. The entire process was repeated for the second ...
1984 Advanced Placement Exam
... 54. Which of the following statements is always true about the phase diagram of any one–component system? (A) The slope of the curve representing equilibrium between the vapor and liquid phases is positive. (B) The slope of the curve representing equilibrium between the liquid and solid phases is ne ...
... 54. Which of the following statements is always true about the phase diagram of any one–component system? (A) The slope of the curve representing equilibrium between the vapor and liquid phases is positive. (B) The slope of the curve representing equilibrium between the liquid and solid phases is ne ...
Leaching of Sphalerite with Hydrogen Peroxide and Nitric Acid
... The leaching experiments were carried out in an all glass reactor (250ml) equipped with a mechanical stirrer. It was heated at constant temperature in a water bath within a temperature in the range of ± 1oC. A mixture of 50cm3 of hydrogen peroxide and 50cm3 of the nitric acid was charged into the re ...
... The leaching experiments were carried out in an all glass reactor (250ml) equipped with a mechanical stirrer. It was heated at constant temperature in a water bath within a temperature in the range of ± 1oC. A mixture of 50cm3 of hydrogen peroxide and 50cm3 of the nitric acid was charged into the re ...
by John Mu
... Fossil fuels provide both energy and raw materials such as ethylene, for the production of other substances.................4 Some scientists research the extraction of materials from biomass to reduce our dependence on fossil fuels .................6 Other resources, such as ethanol, are readily av ...
... Fossil fuels provide both energy and raw materials such as ethylene, for the production of other substances.................4 Some scientists research the extraction of materials from biomass to reduce our dependence on fossil fuels .................6 Other resources, such as ethanol, are readily av ...
ch14
... SnCl2 and PbCl2 are white, crystalline solids with high melting points. SnCl4 is a volatile, benzene-soluble liquid. ...
... SnCl2 and PbCl2 are white, crystalline solids with high melting points. SnCl4 is a volatile, benzene-soluble liquid. ...
Unit 5 Student Packet
... 8. The specific heat of liquid ammonia is 4.38 J/g C. Determine the amount of heat used to raise the temperature of 1.50 g of NH3 (l) from – 60. C to – 55 C. 9. When 0.80 g of sulfur is burned to form only sulfur dioxide gas. All of the heat released is used to raise the temperature of 100. g of ...
... 8. The specific heat of liquid ammonia is 4.38 J/g C. Determine the amount of heat used to raise the temperature of 1.50 g of NH3 (l) from – 60. C to – 55 C. 9. When 0.80 g of sulfur is burned to form only sulfur dioxide gas. All of the heat released is used to raise the temperature of 100. g of ...
Solution Notes, Molarity, Dilutions
... molecule is attracted to the Na+ ion in the salt crystal and pulls it into the water. • The + end of the water is attracted to the Clion. ...
... molecule is attracted to the Na+ ion in the salt crystal and pulls it into the water. • The + end of the water is attracted to the Clion. ...
Chemical Equation
... Predicting Formulas of Ionic Compounds (cont.2) • When using subscripts for polyatomic ions, the ion is placed in parentheses, and the subscript is placed on the outside to indicate “x” ion units. – The subscript applies to all the elements in the ...
... Predicting Formulas of Ionic Compounds (cont.2) • When using subscripts for polyatomic ions, the ion is placed in parentheses, and the subscript is placed on the outside to indicate “x” ion units. – The subscript applies to all the elements in the ...
solute
... between solute and solvent particles particle size – smaller dissolves faster because more surface area temperature – solutes generally dissolve faster at higher temps. – higher kinetic energy at higher temps. – stronger and more frequent collisions between solute and solvent particles - Excepti ...
... between solute and solvent particles particle size – smaller dissolves faster because more surface area temperature – solutes generally dissolve faster at higher temps. – higher kinetic energy at higher temps. – stronger and more frequent collisions between solute and solvent particles - Excepti ...
Summary - Clydebank High School
... Section (c) – Patterns in the Periodic Table. 1. The Modern day Periodic Table is based on the work of the Russian chemist ............................................. who arranged the elements in order of increasing .................................... mass and left spaces for yet to be ......... ...
... Section (c) – Patterns in the Periodic Table. 1. The Modern day Periodic Table is based on the work of the Russian chemist ............................................. who arranged the elements in order of increasing .................................... mass and left spaces for yet to be ......... ...
Lab #4: Chemical Reactions
... Obtain a plastic cup with two platinum wires fused into it and fill the container with the catalyst-containing water (the water used for this reaction contains an acid catalyst) until the water is about 1cm from the top of the container. Next, fill an extra-small test tube completely with the cataly ...
... Obtain a plastic cup with two platinum wires fused into it and fill the container with the catalyst-containing water (the water used for this reaction contains an acid catalyst) until the water is about 1cm from the top of the container. Next, fill an extra-small test tube completely with the cataly ...
H reactants
... mole of the a liquid. b. Molar enthalpy(heat) of fusion – ∆Hfus heat required to melt one mole of a solid ...
... mole of the a liquid. b. Molar enthalpy(heat) of fusion – ∆Hfus heat required to melt one mole of a solid ...
How to Balance Chemical Equations
... bonds are formed. The 'law of conservation of __________' is supported as the weight doesn’t change between the mass of the reactants and the mass of the products. 2. How to balance a chemical equation In balancing chemical equations you need to remember to three important points. a) You do not chan ...
... bonds are formed. The 'law of conservation of __________' is supported as the weight doesn’t change between the mass of the reactants and the mass of the products. 2. How to balance a chemical equation In balancing chemical equations you need to remember to three important points. a) You do not chan ...
ionic bond. - cloudfront.net
... Cation Formation • Main group metals lose all their valence e-’s to form cations (+): • This loss of electrons is called ...
... Cation Formation • Main group metals lose all their valence e-’s to form cations (+): • This loss of electrons is called ...
Chemistry: The Study of Change
... The Heat of Solution (DHsoln) is the heat generated or absorbed when a solute dissolves in a solvent. ...
... The Heat of Solution (DHsoln) is the heat generated or absorbed when a solute dissolves in a solvent. ...
Review for Final Exam - Short Answer and Problems
... Limestone is composed of calcium carbonate (CaCO3) as well as other compounds. In an analysis, a chemist takes a sample of limestone which has a mass of 413 mg and treats it with oxalic acid (H2C2O4). A chemical reaction occurs between the calcium carbonate and the acid producing calcium oxalate and ...
... Limestone is composed of calcium carbonate (CaCO3) as well as other compounds. In an analysis, a chemist takes a sample of limestone which has a mass of 413 mg and treats it with oxalic acid (H2C2O4). A chemical reaction occurs between the calcium carbonate and the acid producing calcium oxalate and ...
AP CHEMISTRY SUMMER ASSIGNMENT AP Chemistry is a
... The large number in front of a formula is called the COEFFICIENT, which indicates how many of that substance are present. The lower-case number IN the formula is the SUBSCRIPT which is determined when the formula is written. The phases of matter can also be indicated. ( s = solid, l = liquid, g = ga ...
... The large number in front of a formula is called the COEFFICIENT, which indicates how many of that substance are present. The lower-case number IN the formula is the SUBSCRIPT which is determined when the formula is written. The phases of matter can also be indicated. ( s = solid, l = liquid, g = ga ...
2011
... Which of the following will cause an increase in the equilibrium concentration of CO? A) Increasing the pressure of the system at constant temperature. B) Adding more O2 to the system. C) Removing CO2 from the system as it is formed. D) Increasing the temperature of the system. ...
... Which of the following will cause an increase in the equilibrium concentration of CO? A) Increasing the pressure of the system at constant temperature. B) Adding more O2 to the system. C) Removing CO2 from the system as it is formed. D) Increasing the temperature of the system. ...
E - Analytical Chemistry
... In the electrochemical cells we have considered, the voltage, which is the difference in electrostatic potential between the two electrodes, also tells us how much work can be done by the electrons that are flowing from one side to the other. The voltage is measured with a potentiometer (or voltmete ...
... In the electrochemical cells we have considered, the voltage, which is the difference in electrostatic potential between the two electrodes, also tells us how much work can be done by the electrons that are flowing from one side to the other. The voltage is measured with a potentiometer (or voltmete ...
College Chemistry I PHS 1025 Fall 2012 Practice Exam 3A
... containing 500. g of water, the temperature of the water increases by 8.63°C. Assuming that the specific heat of water is 4.18 J/(g ∙ °C), and that the heat absorption by the calorimeter is negligible, estimate the enthalpy of combustion per mole of anthracene. A) -7070 kJ/mol B) +39.7 kJ/mol C) -81 ...
... containing 500. g of water, the temperature of the water increases by 8.63°C. Assuming that the specific heat of water is 4.18 J/(g ∙ °C), and that the heat absorption by the calorimeter is negligible, estimate the enthalpy of combustion per mole of anthracene. A) -7070 kJ/mol B) +39.7 kJ/mol C) -81 ...
Reaction Stoichiometry
... Chlorobenzene, C6H5Cl, is used in the production of many important chemicals, such as aspirin, dyes, and disinfectants. One industrial method of preparing chlorobenzene is to react benzene, C6H6, with chlorine. C6H6(l) + Cl2(g) → C6H5Cl(l) + HCl(g) When 36.8 g benzene react with an excess of Cl2, th ...
... Chlorobenzene, C6H5Cl, is used in the production of many important chemicals, such as aspirin, dyes, and disinfectants. One industrial method of preparing chlorobenzene is to react benzene, C6H6, with chlorine. C6H6(l) + Cl2(g) → C6H5Cl(l) + HCl(g) When 36.8 g benzene react with an excess of Cl2, th ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.