The Thomas Hardye School Summer Preparation Task Chemistry AS
... Moles – 3 significant figures Concentrations – 3 significant figures Temperatures – 1 decimal place Masses - 2 decimal places Common Acids and Bases (alkali’s) -Complete the table below Acids Name Sulphuric acid ...
... Moles – 3 significant figures Concentrations – 3 significant figures Temperatures – 1 decimal place Masses - 2 decimal places Common Acids and Bases (alkali’s) -Complete the table below Acids Name Sulphuric acid ...
4 Chemistry
... Numbers that sit after and below the symbol. Represent number of atoms of that particular element. Numbers used to show how many molecules and/or compounds there are in a substance Are used to show reactions All substances needed for the reaction to take place All substances are on the left hand ...
... Numbers that sit after and below the symbol. Represent number of atoms of that particular element. Numbers used to show how many molecules and/or compounds there are in a substance Are used to show reactions All substances needed for the reaction to take place All substances are on the left hand ...
Chemical Reactions - hrsbstaff.ednet.ns.ca
... What is a chemical reaction? • A chemical reaction is a chemical change where chemical substances (called reactants) react to give new chemical substances (called products). • Example – The combustion of hydrogen in oxygen is a chemical reaction which gives water. • Hydrogen and Oxygen are the reac ...
... What is a chemical reaction? • A chemical reaction is a chemical change where chemical substances (called reactants) react to give new chemical substances (called products). • Example – The combustion of hydrogen in oxygen is a chemical reaction which gives water. • Hydrogen and Oxygen are the reac ...
The EMF technique
... The electromotive force technique • The EMF technique for transport number determination is based on open cell voltage measurements on a sample equipped with two reversible electrodes and subjected to a gradient in chemical potential. ...
... The electromotive force technique • The EMF technique for transport number determination is based on open cell voltage measurements on a sample equipped with two reversible electrodes and subjected to a gradient in chemical potential. ...
Chapter 20 - public.asu.edu
... Half-cells such as these are used as reference electrodes. The Ag/AgCl electrode, along with a glass electrode, is used in a pH meter. ...
... Half-cells such as these are used as reference electrodes. The Ag/AgCl electrode, along with a glass electrode, is used in a pH meter. ...
Exam Review - hrsbstaff.ednet.ns.ca
... a) alpha particles are the nuclei of helium atoms. b) the mass of an atom is concentrated in its nucleus. c) cathode rays are streams of negatively charged ions. d) the charge-to-mass (e/m) ratio is the same for all cathode ray particles ...
... a) alpha particles are the nuclei of helium atoms. b) the mass of an atom is concentrated in its nucleus. c) cathode rays are streams of negatively charged ions. d) the charge-to-mass (e/m) ratio is the same for all cathode ray particles ...
Final Exam Review
... b. Kinetic energy of water molecules increases when the heated metal is immersed. c. Kinetic energy of water molecules decreases when the heated metal is immersed. d. Kinetic energy of metal atoms increases when immersed in the cooler water. 2. The gases helium, neon, and argon are in separate conta ...
... b. Kinetic energy of water molecules increases when the heated metal is immersed. c. Kinetic energy of water molecules decreases when the heated metal is immersed. d. Kinetic energy of metal atoms increases when immersed in the cooler water. 2. The gases helium, neon, and argon are in separate conta ...
Chemistry to Remember
... Temperature is measured by two different scales: degree Fahrenheit (˚F) and degree Centigrade (˚C). A thermometer is a column of mercury in a vacuum that expands and contracts depending on the thermometric activity of the substance surrounding it. These thermometric scales have been established usin ...
... Temperature is measured by two different scales: degree Fahrenheit (˚F) and degree Centigrade (˚C). A thermometer is a column of mercury in a vacuum that expands and contracts depending on the thermometric activity of the substance surrounding it. These thermometric scales have been established usin ...
Introduction to Chemical Reactions and Equations Study Guide
... 2. The numbers written to the bottom right of element symbols in a compound are called ___subscripts________. These numbers tell you the ratio of __atoms______ in the compound. 3. Sometimes the names of ionic compounds include roman numerals written in parenthesis after the cation’s name. What do th ...
... 2. The numbers written to the bottom right of element symbols in a compound are called ___subscripts________. These numbers tell you the ratio of __atoms______ in the compound. 3. Sometimes the names of ionic compounds include roman numerals written in parenthesis after the cation’s name. What do th ...
Answer Key - La Quinta High School
... takes place. However, the only evidence for this reaction is the release of heat energy, which should be evident as a temperature change for the mixture. Since water has a relatively high specific heat capacity, however, if the acid and base solutions are very dilute, the temperature may change only ...
... takes place. However, the only evidence for this reaction is the release of heat energy, which should be evident as a temperature change for the mixture. Since water has a relatively high specific heat capacity, however, if the acid and base solutions are very dilute, the temperature may change only ...
4 – Thermodynamic and dielectric properties
... In liquid water, the excitation of vibrations accounts for about half of the measured heat capacity, and the remaining configurational contribution is associated with the distortion and breaking of hydrogen bonds. The energy absorbed in these processes is not available to increase the kinetic energy ...
... In liquid water, the excitation of vibrations accounts for about half of the measured heat capacity, and the remaining configurational contribution is associated with the distortion and breaking of hydrogen bonds. The energy absorbed in these processes is not available to increase the kinetic energy ...
name - cloudfront.net
... - Strong acids and bases Answer the following questions (making solutions & electrolytes) 1. I need 400 ml solution of .2 M NaOH. I only have a 6M solution available. How would I make the solution that I need? 2. Explain how to prepare 300 mL of 1.75 M HCl solution if I start with 12.1 M solution. 3 ...
... - Strong acids and bases Answer the following questions (making solutions & electrolytes) 1. I need 400 ml solution of .2 M NaOH. I only have a 6M solution available. How would I make the solution that I need? 2. Explain how to prepare 300 mL of 1.75 M HCl solution if I start with 12.1 M solution. 3 ...
Paper
... Section A Answer at least two questions from this section [see page 1 for full instructions]. 1. An experiment was carried out to determine the percentage water of crystallisation and the degree of water of crystallisation, x, in a sample of hydrated sodium carbonate crystals (Na2CO3.xH2O). An 8.20 ...
... Section A Answer at least two questions from this section [see page 1 for full instructions]. 1. An experiment was carried out to determine the percentage water of crystallisation and the degree of water of crystallisation, x, in a sample of hydrated sodium carbonate crystals (Na2CO3.xH2O). An 8.20 ...
INTRODUCTION TO CHEMISTRY
... b. If 25g of magnesium metal burn in air, 41.5g of ash are formed. What mass of oxygen reacted with the magnesium? ...
... b. If 25g of magnesium metal burn in air, 41.5g of ash are formed. What mass of oxygen reacted with the magnesium? ...
Complete the following equations
... (d) A compound composed of lithium boron and hydrogen that is used as a reducing agent in organic synthesis: _LiBH4__________ (e) An aluminum compound used for the treatment of municipal water: __Al2(SO4)3__________ ...
... (d) A compound composed of lithium boron and hydrogen that is used as a reducing agent in organic synthesis: _LiBH4__________ (e) An aluminum compound used for the treatment of municipal water: __Al2(SO4)3__________ ...
Chemistry Final Exam Study Guide_S2014
... sodium chlorate absorbs energy, it produces solid sodium chloride and oxygen gas. 42. Predict the products of the following single replacement reactions using the Activity Series in your Reference Tables. If no reaction occurs, write NR. If a reaction occurs be sure to write the correct formulas and ...
... sodium chlorate absorbs energy, it produces solid sodium chloride and oxygen gas. 42. Predict the products of the following single replacement reactions using the Activity Series in your Reference Tables. If no reaction occurs, write NR. If a reaction occurs be sure to write the correct formulas and ...
Chapter 20: Electrochemistry
... H2O + NO2- --> NO3H2O + NO2- --> NO3- + 2H+ H2O + NO2- --> NO3- + 2H+ + 2e2(3e- + 4H+ + MnO4- --> MnO2 + 2H2O) 3(H2O + NO2- --> NO3- + 2H+ + 2e-) (3NO2- + 2H+ + 2MnO4- --> 2MnO2 + H2O + 3NO3-) +2OH+2OH(3NO2- + H2O + 2MnO4- --> 2MnO2 + 2OH- + 3NO3-) ...
... H2O + NO2- --> NO3H2O + NO2- --> NO3- + 2H+ H2O + NO2- --> NO3- + 2H+ + 2e2(3e- + 4H+ + MnO4- --> MnO2 + 2H2O) 3(H2O + NO2- --> NO3- + 2H+ + 2e-) (3NO2- + 2H+ + 2MnO4- --> 2MnO2 + H2O + 3NO3-) +2OH+2OH(3NO2- + H2O + 2MnO4- --> 2MnO2 + 2OH- + 3NO3-) ...
Chapter 3
... R = 0.082 L atm/ mol K T = Kelvin temperature 1 M NaCl is 90% ionized and 10% ion pairs. i = 0.9 + 0.9 + 0.1 = 1.9 Osmolarity (osm/L) = iM ...
... R = 0.082 L atm/ mol K T = Kelvin temperature 1 M NaCl is 90% ionized and 10% ion pairs. i = 0.9 + 0.9 + 0.1 = 1.9 Osmolarity (osm/L) = iM ...
Electrochemistry I
... that we have two different solutions in direct contact with each other. This could probably be done by placing a felt divider (or some other barrier which will allow the movement of electricity, but not allow the solutions to mix) between the two solutions, but it would create problems. The Cu2+ and ...
... that we have two different solutions in direct contact with each other. This could probably be done by placing a felt divider (or some other barrier which will allow the movement of electricity, but not allow the solutions to mix) between the two solutions, but it would create problems. The Cu2+ and ...
CP Chemistry Final Review – Chap. 10-19
... 2. Explain the effect of making and breaking bonds in terms of energy changes. 3. Characterize reactions as endothermic or exothermic and create a graph from the sign of H. ChemFinal10-19 ...
... 2. Explain the effect of making and breaking bonds in terms of energy changes. 3. Characterize reactions as endothermic or exothermic and create a graph from the sign of H. ChemFinal10-19 ...
Chem 30A, Test Review #2
... The fermentation of glucose (C6H12O6) solution by yeast occurs as follows: C6H12O6(aq) + yeast 2 C2H5OH(l) + 2 CO2(g) (a) Calculate the theoretical yield (in grams) for the formation of pure ethanol (C2H5OH) from complete fermentation of glucose solution containing 454 g of glucose. (b) If 176 g o ...
... The fermentation of glucose (C6H12O6) solution by yeast occurs as follows: C6H12O6(aq) + yeast 2 C2H5OH(l) + 2 CO2(g) (a) Calculate the theoretical yield (in grams) for the formation of pure ethanol (C2H5OH) from complete fermentation of glucose solution containing 454 g of glucose. (b) If 176 g o ...
Chemistry Nomenclature Notes
... Example 1: Sodium atoms tend to lose an electron to form the cation, Na1+. Chlorine atoms tend to gain electrons to form an anion, Cl1-. When these two elements are brought together under the proper conditions a chemical reaction takes place in which the sodium atom gives its electron to the chlorin ...
... Example 1: Sodium atoms tend to lose an electron to form the cation, Na1+. Chlorine atoms tend to gain electrons to form an anion, Cl1-. When these two elements are brought together under the proper conditions a chemical reaction takes place in which the sodium atom gives its electron to the chlorin ...
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.