Answers to Homework Problem Sheet 8
... The neutralization reaction is a 1:1 reaction with chemical equation: HCl(aq) + NaOH(aq) à NaCl(aq) + H2O(l) After the reactants mix the solution has a volume of 200 mL. Assuming the solution the same density as pure water, this corresponds to a mass of: mass (g) = density (g mL-1) × volume (mL) = ...
... The neutralization reaction is a 1:1 reaction with chemical equation: HCl(aq) + NaOH(aq) à NaCl(aq) + H2O(l) After the reactants mix the solution has a volume of 200 mL. Assuming the solution the same density as pure water, this corresponds to a mass of: mass (g) = density (g mL-1) × volume (mL) = ...
chapter 2
... d. balance: measures mass (g) e. stirring rod – used to stir solutions f. ruler – used to measure length (cm) ...
... d. balance: measures mass (g) e. stirring rod – used to stir solutions f. ruler – used to measure length (cm) ...
Matter- Types and Changes
... Element Names and Symbols • Each element has a name and 1, 2 or 3 letter abbreviation called a symbol. The first letter in a symbol MUST be capital and the other(s) ...
... Element Names and Symbols • Each element has a name and 1, 2 or 3 letter abbreviation called a symbol. The first letter in a symbol MUST be capital and the other(s) ...
Theoretical Calculation of Enthalpy of reactions involved in PZ
... Temperature dependency of theoretical equilibrium constants for reactions 1-4 calculated in this work are used to calculate the enthalpies of the corresponding reactions. Enthalpy of each of the reactions is calculated by correlating ln K to equation 5 and will be given in full paper. Deprotonation ...
... Temperature dependency of theoretical equilibrium constants for reactions 1-4 calculated in this work are used to calculate the enthalpies of the corresponding reactions. Enthalpy of each of the reactions is calculated by correlating ln K to equation 5 and will be given in full paper. Deprotonation ...
Chapter 18: Chemical Thermodynamics
... Since Enthalpy is a state function, enthalpy change is the same whether a reaction occurs in one step or many. This means that if we add reaction (steps) we can add their enthalpies. Note: If a reaction is doubled, the value of H is ____________ If a reaction is tripled, the value of H is ________ ...
... Since Enthalpy is a state function, enthalpy change is the same whether a reaction occurs in one step or many. This means that if we add reaction (steps) we can add their enthalpies. Note: If a reaction is doubled, the value of H is ____________ If a reaction is tripled, the value of H is ________ ...
Slide 1
... IUPAC names for a carboxylic acid are derived from the name of the parent hydrocarbon. – The final -e is dropped from the name of the parent hydrocarbon – The suffix -oic is added followed by the word acid. Many organic acids are called by their common (trivial) names which are derived from Greek or ...
... IUPAC names for a carboxylic acid are derived from the name of the parent hydrocarbon. – The final -e is dropped from the name of the parent hydrocarbon – The suffix -oic is added followed by the word acid. Many organic acids are called by their common (trivial) names which are derived from Greek or ...
CHAPTER 1 Practice Exercises 1.1 12.3 g Cd 1.3 26.9814 u 1.5
... A chemical reaction is a process whereby one or more chemical species is/are transformed into different chemical species. This generally involves the making and/or breaking of chemical bonds. A product is the species formed in a chemical reaction. ...
... A chemical reaction is a process whereby one or more chemical species is/are transformed into different chemical species. This generally involves the making and/or breaking of chemical bonds. A product is the species formed in a chemical reaction. ...
practice final examination
... The following are some physical and chemical properties of metals and nonmetals. Match the stated properties in column one with the type of element (metal or nonmetal) that can exhibit the given property. State your answer in column two ...
... The following are some physical and chemical properties of metals and nonmetals. Match the stated properties in column one with the type of element (metal or nonmetal) that can exhibit the given property. State your answer in column two ...
Worksheet
... . . . Li3N(s) + . . . H2O(l) . . . Li+ (aq) + . . . OH-(aq) + . . . NH3(g) 35. When the equation above is balanced and all coefficients reduced to lowest whole number terms, the coefficient for OH- (aq) is (A) 1 (B) 2 (C) 3 (D) 4 (E) 6 36. When hafnium metal is heated in an atmosphere of chlorine ...
... . . . Li3N(s) + . . . H2O(l) . . . Li+ (aq) + . . . OH-(aq) + . . . NH3(g) 35. When the equation above is balanced and all coefficients reduced to lowest whole number terms, the coefficient for OH- (aq) is (A) 1 (B) 2 (C) 3 (D) 4 (E) 6 36. When hafnium metal is heated in an atmosphere of chlorine ...
Meeting no
... that compound. Molecules may contain two atoms of the same element, such as O2 and H2, or they may consist of two or more different atoms, such as CCl4 and H2O. In the study of chemistry, molecules are usually discussed in terms of their molecular weights and moles. Ionic compounds, such as NaCl and ...
... that compound. Molecules may contain two atoms of the same element, such as O2 and H2, or they may consist of two or more different atoms, such as CCl4 and H2O. In the study of chemistry, molecules are usually discussed in terms of their molecular weights and moles. Ionic compounds, such as NaCl and ...
Chapter 6 Chemical reactions Classification And Mass Relationships
... Balance the following reactions • Li2O (s) + H2O (l) Æ LiOH (aq) • CH4 (g) + H2O (g) Æ CO (g) + H2 (g) • FeS (s) + HCl (aq) Æ FeCl2(aq) + H2S (g) • C2H5OH (l)+O2 (g) Æ CO2(g) + H2O (g) Chapter 6 ...
... Balance the following reactions • Li2O (s) + H2O (l) Æ LiOH (aq) • CH4 (g) + H2O (g) Æ CO (g) + H2 (g) • FeS (s) + HCl (aq) Æ FeCl2(aq) + H2S (g) • C2H5OH (l)+O2 (g) Æ CO2(g) + H2O (g) Chapter 6 ...
Chapter 8
... • A formula equation uses symbols & formulas to represent the identities & relative amounts of reactants & products. • There are also word equations which use chemical names instead of formulas. • See p. 246 Table Reactants (s) → Products (g) Original Substances ...
... • A formula equation uses symbols & formulas to represent the identities & relative amounts of reactants & products. • There are also word equations which use chemical names instead of formulas. • See p. 246 Table Reactants (s) → Products (g) Original Substances ...
First 9 weeks Study Guide 8th Grade
... A substance that consists of two or more different elements is a compound. Living matter is made up mostly of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus which form organic compounds. Elements ...
... A substance that consists of two or more different elements is a compound. Living matter is made up mostly of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus which form organic compounds. Elements ...
Physical Science Semester 2 Final Exam 2013 –STUDY GUIDE
... 17. Increasing the speed of an object ____ its potential energy. 18. The SI (metric) unit for energy is the ____. 19. You can calculate kinetic energy by using the equation ____. 20. You can calculate gravitational potential energy by using the equation ____. 21. According to the law of conservatio ...
... 17. Increasing the speed of an object ____ its potential energy. 18. The SI (metric) unit for energy is the ____. 19. You can calculate kinetic energy by using the equation ____. 20. You can calculate gravitational potential energy by using the equation ____. 21. According to the law of conservatio ...
File
... Accept all reasonable responses. 1. ___________________________________________________________ 2. ___________________________________________________________ 3. ___________________________________________________________ ...
... Accept all reasonable responses. 1. ___________________________________________________________ 2. ___________________________________________________________ 3. ___________________________________________________________ ...
Full Review
... Mass # At. # Chapter 3 (7.5%) Symbols for elements (from periodic table) No. protons, no. neutrons, no. electrons, charge problem • Atomic Number = Number of protons • Mass Number = # of Protons + # of neutrons • Isotopes, writing in the 14C convention •Average atomic mass calculation ...
... Mass # At. # Chapter 3 (7.5%) Symbols for elements (from periodic table) No. protons, no. neutrons, no. electrons, charge problem • Atomic Number = Number of protons • Mass Number = # of Protons + # of neutrons • Isotopes, writing in the 14C convention •Average atomic mass calculation ...
CHEMISTRY FINAL EXAM REVIEW SHEET
... Elements in the free state have an oxidation number of 0. A monatomic ion has an oxidation number equal to its charge. Hydrogen is usually +1. Oxygen is usually –2. In a compound, the more electronegative element is given an oxidation number equal to its usual ionic charge. The sum of the oxidation ...
... Elements in the free state have an oxidation number of 0. A monatomic ion has an oxidation number equal to its charge. Hydrogen is usually +1. Oxygen is usually –2. In a compound, the more electronegative element is given an oxidation number equal to its usual ionic charge. The sum of the oxidation ...
Introduction to Chemical Reactions and Equations Study Guide
... 11. If you read an equation aloud, what do you say when you read the arrow? __yields_____________ 12. What law are we verifying by balancing equations? What does the law say? law of conservation of matter; matter cannot be created or destroyed ...
... 11. If you read an equation aloud, what do you say when you read the arrow? __yields_____________ 12. What law are we verifying by balancing equations? What does the law say? law of conservation of matter; matter cannot be created or destroyed ...
Chapter 9 Notes - Get a Clue with Mrs. Perdue
... Could lead to organ failure, blindness, death, etc. ...
... Could lead to organ failure, blindness, death, etc. ...
Stoichiometry: Calculations with Chemical Formulas and Equations
... – The molar mass of an element is the mass number for the element that we find on the periodic table. – The formula weight or mass FM/FM(in amu’s) will be the same number as the molar mass (in g/mol). Stoichiometry © 2009, Prentice-Hall, Inc. ...
... – The molar mass of an element is the mass number for the element that we find on the periodic table. – The formula weight or mass FM/FM(in amu’s) will be the same number as the molar mass (in g/mol). Stoichiometry © 2009, Prentice-Hall, Inc. ...
Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.