2(g)
... Excess and limiting reagents refer to the reactant that will run out first and stop more product from forming. ...
... Excess and limiting reagents refer to the reactant that will run out first and stop more product from forming. ...
AP Chemistry Summer Assignment
... For those students who have already taken a high school chemistry course, much of the material in the summer packet will be familiar to you. For those students who will be taking AP Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and i ...
... For those students who have already taken a high school chemistry course, much of the material in the summer packet will be familiar to you. For those students who will be taking AP Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and i ...
Thermodynamics
... Energy can be converted to one form or another but it can not be created or destroyed. Enthalpy -Enthalpy (ΔH): The heat change of a system at constant pressure. -It determines the ability of a reaction to produce heat. -It is a state function. -A state function’s value is: 1.Dependent on temperatur ...
... Energy can be converted to one form or another but it can not be created or destroyed. Enthalpy -Enthalpy (ΔH): The heat change of a system at constant pressure. -It determines the ability of a reaction to produce heat. -It is a state function. -A state function’s value is: 1.Dependent on temperatur ...
key - Greenslime.info
... is sodium, followed by magnesium, boron and then carbon. Why? Sodium only has one valence electron to lose in order to react. Magnesium has two valance electrons, boron has three, and carbon has four. The fewer the valance electrons that have to be either gained or lost to reach a complete valance e ...
... is sodium, followed by magnesium, boron and then carbon. Why? Sodium only has one valence electron to lose in order to react. Magnesium has two valance electrons, boron has three, and carbon has four. The fewer the valance electrons that have to be either gained or lost to reach a complete valance e ...
Atomic Theory (2
... 2.) Convert the following to particles (atoms, compounds, molecules, etc): a. 3.5 moles of Aluminum Phosphide b. 7.9 moles of diphosphorus pentoxide c. 1.5 moles of Carbon tetrachloride d. 5 L of Chlorine e. 15 L of Hydrogen gas f. 32 g of O2 g. 62 g of P h. 132 g of CO2 3.) Convert the following to ...
... 2.) Convert the following to particles (atoms, compounds, molecules, etc): a. 3.5 moles of Aluminum Phosphide b. 7.9 moles of diphosphorus pentoxide c. 1.5 moles of Carbon tetrachloride d. 5 L of Chlorine e. 15 L of Hydrogen gas f. 32 g of O2 g. 62 g of P h. 132 g of CO2 3.) Convert the following to ...
KINETICS AND EQUILIBRIUM
... chemical reaction should not be confused with the sign for H. a. The sign of H tells us whether a reaction is endothermic or exothermic. b. If H is positive the energy term is found on the reactant side the reaction is endothermic. c. conversely if H is negative the energy term is found on the p ...
... chemical reaction should not be confused with the sign for H. a. The sign of H tells us whether a reaction is endothermic or exothermic. b. If H is positive the energy term is found on the reactant side the reaction is endothermic. c. conversely if H is negative the energy term is found on the p ...
Stoichometry Notes (Unit 2)
... one diatomic oxygen (gas) molecule react to yield two water (liquid) molecules. Hydrogen and oxygen are the reactants (a.k.a. reagents) and water is the product. The “à” symbol separates the reactant(s) from the product(s) and serves the same purpose as the “=” sign does in algebra. The total number ...
... one diatomic oxygen (gas) molecule react to yield two water (liquid) molecules. Hydrogen and oxygen are the reactants (a.k.a. reagents) and water is the product. The “à” symbol separates the reactant(s) from the product(s) and serves the same purpose as the “=” sign does in algebra. The total number ...
Mole Concept and Stoichiometry
... standard temperature and pressure ( STP = O0 C and 1 atm ), has a mass of 31.998 grams and contains about 6.022 x 1023 molecules of oxygen. Measuring one of these quantities allows the calculation of the others and this is frequently done in stoichiometry. One interpretation : A specific number of p ...
... standard temperature and pressure ( STP = O0 C and 1 atm ), has a mass of 31.998 grams and contains about 6.022 x 1023 molecules of oxygen. Measuring one of these quantities allows the calculation of the others and this is frequently done in stoichiometry. One interpretation : A specific number of p ...
ws-8-14-2
... a. a plot of [A] vs t gives a straight line b. a plot of 1/[A] vs t gives a straight line __________ 2. First order rate law c. a plot of ln[A] vs t gives a straight line d. slope = k __________ 3. Second order rate law e. slope = -k i. rate = k ; [A] = -kt + [A]0 f. t½ = .693/k k. rate = k[A]2 ; 1/ ...
... a. a plot of [A] vs t gives a straight line b. a plot of 1/[A] vs t gives a straight line __________ 2. First order rate law c. a plot of ln[A] vs t gives a straight line d. slope = k __________ 3. Second order rate law e. slope = -k i. rate = k ; [A] = -kt + [A]0 f. t½ = .693/k k. rate = k[A]2 ; 1/ ...
Chemistry Review ATOMS
... • The properties of a compound are often very different from the elements themselves. – Example: Water – H2O • Compound with 2 hydrogen atoms and 1 oxygen atom ...
... • The properties of a compound are often very different from the elements themselves. – Example: Water – H2O • Compound with 2 hydrogen atoms and 1 oxygen atom ...
Unit 2
... Unit 5: The Periodic Table 45. The atomic radius generally increases with atomic number in a particular group of elements. The dominant factor that determines this variation is the _____ A. addition of energy levels. B. increase in the number of neutrons. C. formation of anew octet. D. increase in n ...
... Unit 5: The Periodic Table 45. The atomic radius generally increases with atomic number in a particular group of elements. The dominant factor that determines this variation is the _____ A. addition of energy levels. B. increase in the number of neutrons. C. formation of anew octet. D. increase in n ...
Word and Skeleton Equations Practice (ws Fall 2010)
... Write the WORD and SKELETON equations for each chemical reaction. Indicate the state of each reactant and product in the skeleton equation. Remember that the following seven elements are diatomic: hydrogen, H2(g); nitrogen, N2(g); oxygen O2(g); fluorine, F2(g); chlorine Cl2(g); bromine, Br2(l); and ...
... Write the WORD and SKELETON equations for each chemical reaction. Indicate the state of each reactant and product in the skeleton equation. Remember that the following seven elements are diatomic: hydrogen, H2(g); nitrogen, N2(g); oxygen O2(g); fluorine, F2(g); chlorine Cl2(g); bromine, Br2(l); and ...
Energy - Winona State University
... - For a gas, pressure is exactly 1 atmosphere. - For a solution, concentration is exactly 1 molar. - Pure substance (liquid or solid), it is the pure liquid or solid. Element - The form [N2(g), K(s)] in which it exists at 1 atm and 25°C. ...
... - For a gas, pressure is exactly 1 atmosphere. - For a solution, concentration is exactly 1 molar. - Pure substance (liquid or solid), it is the pure liquid or solid. Element - The form [N2(g), K(s)] in which it exists at 1 atm and 25°C. ...
Notes
... • Oxidation potential measures the strength of reducing agents. When the reduction half-‐reactions is read backwards, they are oxidation half reactions. In other words, oxidation potentials of reducing agents are ...
... • Oxidation potential measures the strength of reducing agents. When the reduction half-‐reactions is read backwards, they are oxidation half reactions. In other words, oxidation potentials of reducing agents are ...
Chapter 2 Chemistry comes alive
... Valence shell – outermost energy level containing chemically active electrons Octet rule – except for the first shell which is full with two electrons, atoms interact in a manner to have eight electrons in their valence shell ...
... Valence shell – outermost energy level containing chemically active electrons Octet rule – except for the first shell which is full with two electrons, atoms interact in a manner to have eight electrons in their valence shell ...
Second Semester Review Part 1
... reduction of the pressure (at constant temperature) will cause it to melt. (D) None of these statements is correct. 100. A pure substance, above its melting point, is in a high pressure cylinder. Upon opening a valve on the cylinder a gas escapes. A pressure gauge on the cylinder shows a pressure of ...
... reduction of the pressure (at constant temperature) will cause it to melt. (D) None of these statements is correct. 100. A pure substance, above its melting point, is in a high pressure cylinder. Upon opening a valve on the cylinder a gas escapes. A pressure gauge on the cylinder shows a pressure of ...
Chapter 4: Chemical Quantities and Aqueous Reactions
... (a) When the beaker contains a 1 M solution of acetic acid, CH3COOH, the bulb in the electric circuit glows only very dimly. (b) When the beaker contains a 1 M solution of ammonia, NH3, the bulb again glows only dimly. (c) When the two solutions are in the same beaker, the bulb glows brightly. What ...
... (a) When the beaker contains a 1 M solution of acetic acid, CH3COOH, the bulb in the electric circuit glows only very dimly. (b) When the beaker contains a 1 M solution of ammonia, NH3, the bulb again glows only dimly. (c) When the two solutions are in the same beaker, the bulb glows brightly. What ...
Review topics-blog
... used to convert units for problems like figuring out how many seconds are in 1 year. We can also use dimensional analysis as a general means of solving problems any time equalities are known. One equality that can easily be used in dimensional analysis is density, like the density of water is 1.0 ...
... used to convert units for problems like figuring out how many seconds are in 1 year. We can also use dimensional analysis as a general means of solving problems any time equalities are known. One equality that can easily be used in dimensional analysis is density, like the density of water is 1.0 ...
mass mass calc
... An aqueous solution of ammonium hydroxide, NH4OH(aq), reacts with an aqueous solution of copper (II) nitrate, Cu(NO3)2(aq) in a double displacement reaction. a) Write the balanced chemical equation for this reaction. b) Calculate the mass of ammonium hydroxide needed to react completely with 75.0 g ...
... An aqueous solution of ammonium hydroxide, NH4OH(aq), reacts with an aqueous solution of copper (II) nitrate, Cu(NO3)2(aq) in a double displacement reaction. a) Write the balanced chemical equation for this reaction. b) Calculate the mass of ammonium hydroxide needed to react completely with 75.0 g ...
CHEMISTRY 123-07 Midterm #1 – Answer key October 14, 2010
... 24. Which statement about strong acids is true? a. Strong acids are weak electrolytes. b. Strong acids are very concentrated. c. Strong acids are almost entirely converted to ions when dissolved in water. d. Acetic acid is a strong acid. e. All of the above are true. 25. Which of the following is a ...
... 24. Which statement about strong acids is true? a. Strong acids are weak electrolytes. b. Strong acids are very concentrated. c. Strong acids are almost entirely converted to ions when dissolved in water. d. Acetic acid is a strong acid. e. All of the above are true. 25. Which of the following is a ...
Multiple Choice Practice. A) P B) S C) Cl D) Li E) 1 F 1. Has the
... mole of I2 formed by this half-reaction? A) 2 B) 6 C) 8 D) 10 E) 12 30. Which of the following is always true at the triple point of a pure substance? A) The vapor pressure of the solid phase equals the vapor pressure of the liquid phase B) The temperature is 0.01K lower than the normal melting poi ...
... mole of I2 formed by this half-reaction? A) 2 B) 6 C) 8 D) 10 E) 12 30. Which of the following is always true at the triple point of a pure substance? A) The vapor pressure of the solid phase equals the vapor pressure of the liquid phase B) The temperature is 0.01K lower than the normal melting poi ...
g) Chemistry 30 - Mr. Jones LHS Science
... d. If C6H6 (g), were consumed instead of C6H6 (l), would you expect the magnitude of H to increase, decrease, or stay the same? Explain. ...
... d. If C6H6 (g), were consumed instead of C6H6 (l), would you expect the magnitude of H to increase, decrease, or stay the same? Explain. ...
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.