ppt
... 3. Single Displacement •One element takes the place (displaces) of another element in a compound. Like stealing a dance ...
... 3. Single Displacement •One element takes the place (displaces) of another element in a compound. Like stealing a dance ...
C1a - Mr Corfe
... Gold Au silver Ag RULE: An metal is more reactive if it is further to the left of the periodic table or further down in the group (not including groups 3-8) TYPES OF REACTIONS PHYSICAL – changing of states EXOTHERMIC – gives out heat ENDOTHERMIC – take in heat from it surrounding THERMAL DECOMPOSI ...
... Gold Au silver Ag RULE: An metal is more reactive if it is further to the left of the periodic table or further down in the group (not including groups 3-8) TYPES OF REACTIONS PHYSICAL – changing of states EXOTHERMIC – gives out heat ENDOTHERMIC – take in heat from it surrounding THERMAL DECOMPOSI ...
Types of Chemical Reactions Name_________________________
... opportunity to learn about the different types of chemical reactions. The website address for this assignment is www.ric.edu/ptiskus/reactions. On the website you will find a brief description of the main types of chemical reactions. There are several representative reactions listed for each main ty ...
... opportunity to learn about the different types of chemical reactions. The website address for this assignment is www.ric.edu/ptiskus/reactions. On the website you will find a brief description of the main types of chemical reactions. There are several representative reactions listed for each main ty ...
Equilibrium
... 5. The average kinetic energy of gases are proportional to the kelvin temperature ● Pressure= force/area ● Properties of Gases: They uniformly fill the container, are easily compressed, mix completely with any other gas, and exert pressure on their surroundings. ● Gases that obey these postulates ar ...
... 5. The average kinetic energy of gases are proportional to the kelvin temperature ● Pressure= force/area ● Properties of Gases: They uniformly fill the container, are easily compressed, mix completely with any other gas, and exert pressure on their surroundings. ● Gases that obey these postulates ar ...
AP Chemistry Summer Assignment 2016
... Predict whether the following combinations will result in a reaction. Write a balanced reaction for those reactions. Indicate you understand the specific reactions by writing the net ionic equation for the reaction. Hopefully you would have memorized the solubility rules before attempting to answer ...
... Predict whether the following combinations will result in a reaction. Write a balanced reaction for those reactions. Indicate you understand the specific reactions by writing the net ionic equation for the reaction. Hopefully you would have memorized the solubility rules before attempting to answer ...
1. What are micelles? Give two examples of micellar systems. Sol. A
... =43.16KJ/mol (c) Methyl acetate undergoes hydrolysis, in the presence of an acid (HCl, for example), to give acetic acidand methyl alcohol. H+CH3COOCH3 + H2O → CH3COOH + CH3OH In the presence of an acid, this reaction should be of second order, since two molecules are reacting.But, it is found to be ...
... =43.16KJ/mol (c) Methyl acetate undergoes hydrolysis, in the presence of an acid (HCl, for example), to give acetic acidand methyl alcohol. H+CH3COOCH3 + H2O → CH3COOH + CH3OH In the presence of an acid, this reaction should be of second order, since two molecules are reacting.But, it is found to be ...
2008 local exam - American Chemical Society
... (D) Read both the bottom and top of the meniscus and average those readings. 7. A 1.0 gram sample of which substance contains the largest number of molecules? (A) COCl2 ...
... (D) Read both the bottom and top of the meniscus and average those readings. 7. A 1.0 gram sample of which substance contains the largest number of molecules? (A) COCl2 ...
Take Home - mvhs
... suspected of being this illicit drug; when tested, the sample was shown to have a percentage composition of 83.71% C, 10.42% H, and 5.61% N. Prove if this sample is phencyclidine. (2 pts work, 1 pt correct answer, 1 pt correct sig figs) ...
... suspected of being this illicit drug; when tested, the sample was shown to have a percentage composition of 83.71% C, 10.42% H, and 5.61% N. Prove if this sample is phencyclidine. (2 pts work, 1 pt correct answer, 1 pt correct sig figs) ...
Stoichiometry - Mrs. Wiedeman
... Sample Exercise 3.12 Calculating Numbers of Molecules and Atoms from Mass ...
... Sample Exercise 3.12 Calculating Numbers of Molecules and Atoms from Mass ...
Chapter 14…Kinetic Theory
... 7. How many molecules of NaOH are in 112 liters of NaOH? 8. How many grams of N2 are present in 67.2 liters of N2? 9. How many molecules of Ca are present in 320 grams of Ca? 10. What is the percent composition of carbon in C6H12O6? 11. How many moles of oxygen are in three moles of Mg(NO3)2? Determ ...
... 7. How many molecules of NaOH are in 112 liters of NaOH? 8. How many grams of N2 are present in 67.2 liters of N2? 9. How many molecules of Ca are present in 320 grams of Ca? 10. What is the percent composition of carbon in C6H12O6? 11. How many moles of oxygen are in three moles of Mg(NO3)2? Determ ...
chemical reaction - MRS. STOTTS CHEMISTRY
... A chemical reaction is the process by which one or more substances are changed into one or more different substances. • the original substances are known as the reactants • the resulting substances are known as the products. According to the law of conservation of mass, the total mass of reactants m ...
... A chemical reaction is the process by which one or more substances are changed into one or more different substances. • the original substances are known as the reactants • the resulting substances are known as the products. According to the law of conservation of mass, the total mass of reactants m ...
Types of Chemical Reactions
... of smaller atoms and /or molecules into larger molecules. • They are also called combination reactions ...
... of smaller atoms and /or molecules into larger molecules. • They are also called combination reactions ...
2 (aq)
... Designates a reactant or product in the liquid state: placed after the formula Designates a reactant or product in the gaseous state; placed after the formula Designates an aqueous solution; the substance is dissolved in water; placed after the formula Indicates that heat is supplied to the reaction ...
... Designates a reactant or product in the liquid state: placed after the formula Designates a reactant or product in the gaseous state; placed after the formula Designates an aqueous solution; the substance is dissolved in water; placed after the formula Indicates that heat is supplied to the reaction ...
2007 - SolPass
... No N2 O 4 is present. No chemical reactions are occurring. The rates of the forward and reverse reactions are equal. The maximum number of molecules has been reached. ...
... No N2 O 4 is present. No chemical reactions are occurring. The rates of the forward and reverse reactions are equal. The maximum number of molecules has been reached. ...
Balancing a Chemical Equation
... MUST ALSO BE FOLLOWED! Energy changes are written in (endo-/ exothermic reactions) ...
... MUST ALSO BE FOLLOWED! Energy changes are written in (endo-/ exothermic reactions) ...
Example: Writing a Thermochemical Equation
... Reversing the equation give: H2O(l) → H2(g) + 1/2O2(g); ∆H = +286 kJ Note that the sign for ∆H is reversed. Applying Stoichiometry to Heats of Reaction As you have just seen, the quantity of heat obtained from a reaction depends on the amount of reactants. Therefore, we can apply stoichiometry to pr ...
... Reversing the equation give: H2O(l) → H2(g) + 1/2O2(g); ∆H = +286 kJ Note that the sign for ∆H is reversed. Applying Stoichiometry to Heats of Reaction As you have just seen, the quantity of heat obtained from a reaction depends on the amount of reactants. Therefore, we can apply stoichiometry to pr ...
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.