Homework Exercises
... 2. What happens to the rate of a reaction if the concentration of the reactants is decreased? ...
... 2. What happens to the rate of a reaction if the concentration of the reactants is decreased? ...
Stoichiometry and Balanced Reactions Chemical Accounting
... • Examples: Methane and hexane as a fuels in combustion reactions – Combustion: Fuel + Oxidant → Products (usually CO2 and H2O) • Balanced reaction must have the correct identities of reactants and products and must follow the law of conservation of matter • Reactions are balanced by changing coeffi ...
... • Examples: Methane and hexane as a fuels in combustion reactions – Combustion: Fuel + Oxidant → Products (usually CO2 and H2O) • Balanced reaction must have the correct identities of reactants and products and must follow the law of conservation of matter • Reactions are balanced by changing coeffi ...
Chemistry Final Exam Study Guide_S2014
... a. These bonds are formed by delocalized electrons in an “electron sea.” b. These bonds involve a transfer of electrons. c. Substances containing these bonds are malleable and have very high melting points. d. Substances containing these bonds do not conduct electricity and have low melting points. ...
... a. These bonds are formed by delocalized electrons in an “electron sea.” b. These bonds involve a transfer of electrons. c. Substances containing these bonds are malleable and have very high melting points. d. Substances containing these bonds do not conduct electricity and have low melting points. ...
thermochermistry ap - Mater Academy Lakes High School
... o Potential energy is the energy of an object based on its position relative to another object. In short, it is the potential to perform work o Work is the force applied to move an object with mass for a distance w=Fxd Force is any kind of push or pull on an object o Heat is energy that causes an ...
... o Potential energy is the energy of an object based on its position relative to another object. In short, it is the potential to perform work o Work is the force applied to move an object with mass for a distance w=Fxd Force is any kind of push or pull on an object o Heat is energy that causes an ...
3 - Zheng Research Group
... then, it has 36.4 g Mn, 21.2 g S, and 42.4 g O; Mn: 36.4 g / 54.9 g/mol = 0.663 mol Mn; S: 21.2 g / 32.1 g/mol = 0.660 mol S; O: 42.4 g / 16.0 g/mol = 2.65 mol O. therefore: divide the smallest number (0.660), the formula is: MnSO4. ...
... then, it has 36.4 g Mn, 21.2 g S, and 42.4 g O; Mn: 36.4 g / 54.9 g/mol = 0.663 mol Mn; S: 21.2 g / 32.1 g/mol = 0.660 mol S; O: 42.4 g / 16.0 g/mol = 2.65 mol O. therefore: divide the smallest number (0.660), the formula is: MnSO4. ...
Unit 3 - Salina USD 305
... ◦ Notes – How Chemistry is Like Love ◦ List-Group-Label Reactions ◦ Begin Worksheet #2 ◦ Wrap Up – Reaction Sort Homework (Write in Planner): ◦ Worksheet #2 (Optional) ...
... ◦ Notes – How Chemistry is Like Love ◦ List-Group-Label Reactions ◦ Begin Worksheet #2 ◦ Wrap Up – Reaction Sort Homework (Write in Planner): ◦ Worksheet #2 (Optional) ...
South Pasadena • AP Chemistry
... double replacement reaction, one of the products of the reaction is… a) H2 d) BaH2 b) H2O e) SO2 c) BaS 12. In the double replacement reaction between the weak acid, HC2H3O2 and strong base, NaOH, which ion(s) are spectator ions? a) Na+, C2H3O2– d) H+, C2H3O2– b) Na+, OH– ...
... double replacement reaction, one of the products of the reaction is… a) H2 d) BaH2 b) H2O e) SO2 c) BaS 12. In the double replacement reaction between the weak acid, HC2H3O2 and strong base, NaOH, which ion(s) are spectator ions? a) Na+, C2H3O2– d) H+, C2H3O2– b) Na+, OH– ...
3rd Quarter Test
... a) forward reaction stops b) reverse reaction stops c) concentration of the reactants and the products becomes equal d) rates of the opposing reaction becomes equal 20) For a chemical system at equilibrium, a rise in temperature will a) favor the endothermic reaction b) favor the exothermic reaction ...
... a) forward reaction stops b) reverse reaction stops c) concentration of the reactants and the products becomes equal d) rates of the opposing reaction becomes equal 20) For a chemical system at equilibrium, a rise in temperature will a) favor the endothermic reaction b) favor the exothermic reaction ...
Pb2+ +2I- → PbI2 (s)
... If given Hf or Sf or Gf, what do you do? Sum of products – sum of reactants (multiply by # of moles) ...
... If given Hf or Sf or Gf, what do you do? Sum of products – sum of reactants (multiply by # of moles) ...
Chapter 14…Kinetic Theory
... Which two substances have the same solubility at 72C? 80 grams of KBr placed in 60C creates a (saturated/unsaturated/supersaturated) solution. When Be(NO3)2 (aq) and NaOH (aq) are mixed together, the resulting precipitate is: Placing a solute in a solvent will (increase/decrease) the boiling point ...
... Which two substances have the same solubility at 72C? 80 grams of KBr placed in 60C creates a (saturated/unsaturated/supersaturated) solution. When Be(NO3)2 (aq) and NaOH (aq) are mixed together, the resulting precipitate is: Placing a solute in a solvent will (increase/decrease) the boiling point ...
Name: 1) At 1 atmosphere and 298 K, 1 mole of H O(l) molecules
... In each of the four beakers shown below, a 2.0-centimeter strip of magnesium ribbon reacts with 100 milliliters of HCl(aq) under the conditions shown. ...
... In each of the four beakers shown below, a 2.0-centimeter strip of magnesium ribbon reacts with 100 milliliters of HCl(aq) under the conditions shown. ...
Balancing Chemical Reactions
... • This is defined as a chemical change in which electrons are gained, either by the removal of oxygen, the addition of hydrogen, or the addition of electrons. ...
... • This is defined as a chemical change in which electrons are gained, either by the removal of oxygen, the addition of hydrogen, or the addition of electrons. ...
2007 - Thompson Rivers University
... carbon, hydrogen and nitrogen atoms. A 2.859 g sample of the compound is burned in excess air, and it produces 4.190 g of carbon dioxide and 3.428 g of water. What is the empirical formula? (Molar Masses: CO2 = 44.01 g/mol; H2O = 18.02 g/mol) (a) (b) (c) → (d) ...
... carbon, hydrogen and nitrogen atoms. A 2.859 g sample of the compound is burned in excess air, and it produces 4.190 g of carbon dioxide and 3.428 g of water. What is the empirical formula? (Molar Masses: CO2 = 44.01 g/mol; H2O = 18.02 g/mol) (a) (b) (c) → (d) ...
Thermochemistry only Sp 12 unit I
... Thermochemistry Thermochemistry is the study of the energy and heat associated with chemical reactions and/or physical transformations. First law of thermodynamics: Energy cannot be created or destroyed. Hess law of constant heat summation: The change in enthalpy, that is, the change in heat at cons ...
... Thermochemistry Thermochemistry is the study of the energy and heat associated with chemical reactions and/or physical transformations. First law of thermodynamics: Energy cannot be created or destroyed. Hess law of constant heat summation: The change in enthalpy, that is, the change in heat at cons ...
Honors-Final-Review-2014
... a. A solution that keeps a constant neutral pH when small amounts of acid or base are added b. Solution of known concentration c. Acid contains one H d. Acid contains three or more H’s e. The point at which the indicator changes color f. Any substance that accepts a proton g. Any substance that dona ...
... a. A solution that keeps a constant neutral pH when small amounts of acid or base are added b. Solution of known concentration c. Acid contains one H d. Acid contains three or more H’s e. The point at which the indicator changes color f. Any substance that accepts a proton g. Any substance that dona ...
Packet
... 29. An element a. can be broken down into simpler substances b. are used to make other elements c. are used to make compounds d. are never found in the periodic table of elements 30. Physical means can be used to separate a. elements b. pure substances b. mixtures d. compounds 31. Anything that take ...
... 29. An element a. can be broken down into simpler substances b. are used to make other elements c. are used to make compounds d. are never found in the periodic table of elements 30. Physical means can be used to separate a. elements b. pure substances b. mixtures d. compounds 31. Anything that take ...
Chemistry2 Midterm Review 2012 – Tuesday
... 31. The molecular formula of allicin, the compound responsible for the smell of garlic, is C6H10OS2. a. What is the molar mass of allicin? b. How many moles of allicin are present in 5.00 mg of this substance? c. How many molecules of allicin are in 5.00 mg of this substance? d. How many S atoms are ...
... 31. The molecular formula of allicin, the compound responsible for the smell of garlic, is C6H10OS2. a. What is the molar mass of allicin? b. How many moles of allicin are present in 5.00 mg of this substance? c. How many molecules of allicin are in 5.00 mg of this substance? d. How many S atoms are ...
Bioorthogonal chemistry
The term bioorthogonal chemistry refers to any chemical reaction that can occur inside of living systems without interfering with native biochemical processes. The term was coined by Carolyn R. Bertozzi in 2003. Since its introduction, the concept of the bioorthogonal reaction has enabled the study of biomolecules such as glycans, proteins, and lipids in real time in living systems without cellular toxicity. A number of chemical ligation strategies have been developed that fulfill the requirements of bioorthogonality, including the 1,3-dipolar cycloaddition between azides and cyclooctynes (also termed copper-free click chemistry), between nitrones and cyclooctynes, oxime/hydrazone formation from aldehydes and ketones, the tetrazine ligation, the isocyanide-based click reaction, and most recently, the quadricyclane ligation.The use of bioorthogonal chemistry typically proceeds in two steps. First, a cellular substrate is modified with a bioorthogonal functional group (chemical reporter) and introduced to the cell; substrates include metabolites, enzyme inhibitors, etc. The chemical reporter must not alter the structure of the substrate dramatically to avoid affecting its bioactivity. Secondly, a probe containing the complementary functional group is introduced to react and label the substrate.Although effective bioorthogonal reactions such as copper-free click chemistry have been developed, development of new reactions continues to generate orthogonal methods for labeling to allow multiple methods of labeling to be used in the same biosystems.