ap 2005 chemistry_b scoring guidelines - AP Central
... Write the formulas to show the reactants and the products for any FIVE of the laboratory situations described below. Answers to more than five choices will not be graded. In all cases, a reaction occurs. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solution a ...
... Write the formulas to show the reactants and the products for any FIVE of the laboratory situations described below. Answers to more than five choices will not be graded. In all cases, a reaction occurs. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solution a ...
Mechanism and Processing Parameters Affecting the Formation of
... spectra confirmed the peak assignments. The positive EI mass spectrum of methyl methanesulfonate (MMS) showed the molecular ion at m/z 110, and the fragments at M-1 (m/z 109), M-15 (M-CH3, m/z 95) and M-31 (M-OCH3, m/z 79) were also detected. The most abundant ion observed (m/z 80) corresponds to th ...
... spectra confirmed the peak assignments. The positive EI mass spectrum of methyl methanesulfonate (MMS) showed the molecular ion at m/z 110, and the fragments at M-1 (m/z 109), M-15 (M-CH3, m/z 95) and M-31 (M-OCH3, m/z 79) were also detected. The most abundant ion observed (m/z 80) corresponds to th ...
Word Pro
... N2(g) + 3 H2(g) → 2 NH3(g) If the final reaction product mixture from a reaction contains 2.0 mol of N2(g), 2.0 mol of H2(g) and 2.0 mol of NH3(g), how many moles of N2(g) and H2(g) were present at the start of the reaction? (i.e. before any NH3 formed)? ...
... N2(g) + 3 H2(g) → 2 NH3(g) If the final reaction product mixture from a reaction contains 2.0 mol of N2(g), 2.0 mol of H2(g) and 2.0 mol of NH3(g), how many moles of N2(g) and H2(g) were present at the start of the reaction? (i.e. before any NH3 formed)? ...
H/ t = W/m
... Calorimetry is the science of measuring heat based on the change in temperature that occurs during the energy exchange between a reaction system and its environment. This exchange in energy can be measured using a thermally insulated container known as a calorimeter. The calorimeter and its contents ...
... Calorimetry is the science of measuring heat based on the change in temperature that occurs during the energy exchange between a reaction system and its environment. This exchange in energy can be measured using a thermally insulated container known as a calorimeter. The calorimeter and its contents ...
Mechanistic and Computational Studies of Ferroin, Simple Organic
... Before the year 1950, many chemists in their ‘right mind’ held the archaic belief that all chemical reactions proceed strictly from reactants to products, though some could be coaxed into reverse. What we now know colloquially as a potential energy surface was only visualized in more than two dimens ...
... Before the year 1950, many chemists in their ‘right mind’ held the archaic belief that all chemical reactions proceed strictly from reactants to products, though some could be coaxed into reverse. What we now know colloquially as a potential energy surface was only visualized in more than two dimens ...
Chapter 4 Aqueous Reactions and Solution Stoichiometry
... • To form the net ionic equation, cross out anything that does not change from the left side of the equation to the right. • The only things left in the equation are those things that change (i.e., react) during the course of the reaction. • Those things that didn’t change (and were deleted from the ...
... • To form the net ionic equation, cross out anything that does not change from the left side of the equation to the right. • The only things left in the equation are those things that change (i.e., react) during the course of the reaction. • Those things that didn’t change (and were deleted from the ...
Solubility and Complex-ion Equilibria
... • Ksp for MgC2O4 is 8.5 × 10-5. • Ksp for BaC2O4 is 1.5 × 10-8. • MgC2O4 is more soluble. • If a dilute acidic solution is added, it will increase the solubility of both salts. MgC2O4 is still more soluble. ...
... • Ksp for MgC2O4 is 8.5 × 10-5. • Ksp for BaC2O4 is 1.5 × 10-8. • MgC2O4 is more soluble. • If a dilute acidic solution is added, it will increase the solubility of both salts. MgC2O4 is still more soluble. ...
Solubility and Complex-ion Equilibria
... • Ksp for MgC2O4 is 8.5 × 10-5. • Ksp for BaC2O4 is 1.5 × 10-8. • MgC2O4 is more soluble. • If a dilute acidic solution is added, it will increase the solubility of both salts. MgC2O4 is still more soluble. ...
... • Ksp for MgC2O4 is 8.5 × 10-5. • Ksp for BaC2O4 is 1.5 × 10-8. • MgC2O4 is more soluble. • If a dilute acidic solution is added, it will increase the solubility of both salts. MgC2O4 is still more soluble. ...
1 AM SYLLABUS (2015) CHEMISTRY AM 06 SYLLABUS
... namely, G = H - TS. Kinetic versus thermodynamic stability. ...
... namely, G = H - TS. Kinetic versus thermodynamic stability. ...
AP Chemistry:
... Exam preparation. Teachers are permitted to download the materials and make copies to use with their students in a classroom setting only. To maintain the security of this exam, teachers should collect all materials after their administration and keep them in a secure location. Exams may not be post ...
... Exam preparation. Teachers are permitted to download the materials and make copies to use with their students in a classroom setting only. To maintain the security of this exam, teachers should collect all materials after their administration and keep them in a secure location. Exams may not be post ...
Name: ______KEY__________________ Date: ______ CHM 130
... 14. (5 pts) An oven cleaning solution is 40.0 % by mass of NaOH. If one jar of this product contains 454 grams of solution, how many grams of NaOH does it contain? Show all work. Mass solute / mass solution x 100 = (x g / 454 g) x 100 = 40.0% ...
... 14. (5 pts) An oven cleaning solution is 40.0 % by mass of NaOH. If one jar of this product contains 454 grams of solution, how many grams of NaOH does it contain? Show all work. Mass solute / mass solution x 100 = (x g / 454 g) x 100 = 40.0% ...
1.24 calculations and chemical reactions
... 4.1) An acid, H2A, reacts with sodium hydroxide as shown in the equation below. H2A(aq) + 2NaOH(aq) 2Na+(aq) + X2– (aq) + 2H2O(l) A solution of this acid was prepared by dissolving 2.02 g of H2A in water and making the volume up to 250 cm3 in a volumetric flask. A 25.0 cm3 sample of this solution re ...
... 4.1) An acid, H2A, reacts with sodium hydroxide as shown in the equation below. H2A(aq) + 2NaOH(aq) 2Na+(aq) + X2– (aq) + 2H2O(l) A solution of this acid was prepared by dissolving 2.02 g of H2A in water and making the volume up to 250 cm3 in a volumetric flask. A 25.0 cm3 sample of this solution re ...
Even-Odd Effect of 35Cl Quadrupole Coupling
... geometrical arrangements in the crystals will be discussed. Since two cations are contained in a unit cell of the rotator phase (space group: P4/nmn, Z = 2), as shown in Fig. 4(a), and since each cation rotates about its long axis along the C4 -axis, we define cation1 and cation2 as located along th ...
... geometrical arrangements in the crystals will be discussed. Since two cations are contained in a unit cell of the rotator phase (space group: P4/nmn, Z = 2), as shown in Fig. 4(a), and since each cation rotates about its long axis along the C4 -axis, we define cation1 and cation2 as located along th ...
Physical Chemistry Lab Report Rubric –Veldman Fall 2012
... ne of the oldest known scientific methods used to measure energy transfer due to heat evolution during a chemical reaction is known as calorimetry (1). The device utilized to measure the energy transfer is known as a calorimeter. In particular, bomb calorimetry is a feasible way to determine the unk ...
... ne of the oldest known scientific methods used to measure energy transfer due to heat evolution during a chemical reaction is known as calorimetry (1). The device utilized to measure the energy transfer is known as a calorimeter. In particular, bomb calorimetry is a feasible way to determine the unk ...
Answers to examination questions
... Q23 D High pressure will bring the gas molecules very close together. This causes more collisions and also allows the weak attractive forces to operate. With low temperatures, the gas molecules do not have enough kinetic energy to continue on their path to avoid that attraction. Q24 A P and ...
... Q23 D High pressure will bring the gas molecules very close together. This causes more collisions and also allows the weak attractive forces to operate. With low temperatures, the gas molecules do not have enough kinetic energy to continue on their path to avoid that attraction. Q24 A P and ...
Chemical Equilibrium Equilibrium A state where the reactants and
... Knowing the equilibrium constant allows us to predict several important features of the reaction. 1) the tendency of the reaction to ___________ (but not the _______________) 2) whether a given set of concentrations represent an __________________ condition 3) the equilibrium position that will be ...
... Knowing the equilibrium constant allows us to predict several important features of the reaction. 1) the tendency of the reaction to ___________ (but not the _______________) 2) whether a given set of concentrations represent an __________________ condition 3) the equilibrium position that will be ...
equilibrium - TeacherWeb
... The density of a pure liquid or solid is a constant at any given temperature. CO2(g) + H2(g) ↔ CO(g) + H2O(l) ...
... The density of a pure liquid or solid is a constant at any given temperature. CO2(g) + H2(g) ↔ CO(g) + H2O(l) ...
Characterization of Quinine and Its Determination
... quenching include concentration quenching (a decrease in the fluorescence-per-unitconcentration as the concentration is increased), also referred to as an inner filter effect, and chemical quenching. Concentration quenching results from excessive absorption of either primary or fluorescent radiatio ...
... quenching include concentration quenching (a decrease in the fluorescence-per-unitconcentration as the concentration is increased), also referred to as an inner filter effect, and chemical quenching. Concentration quenching results from excessive absorption of either primary or fluorescent radiatio ...
Module 2 Alcohols, halogenoalkanes and analysis
... 2 Draw the four structural isomers of C4H10O that are alcohols. Name each alcohol and classify each structure as a primary, secondary or tertiary alcohol. 3 Show how hydrogen bonds act between methanol and water. Explain why methanol is more soluble than pentan-1-ol in water. ...
... 2 Draw the four structural isomers of C4H10O that are alcohols. Name each alcohol and classify each structure as a primary, secondary or tertiary alcohol. 3 Show how hydrogen bonds act between methanol and water. Explain why methanol is more soluble than pentan-1-ol in water. ...