DUE: Tuesday, Jan. 20, 2015 Solutions Take Home Test
... ____ 36. What is the molarity of a solution containing 56 grams of solute in 959 mL of solution? (molar mass of solute = 26 g/mol) a. 1.5M b. 2.2M c. 2.1M d. 0.0022M ...
... ____ 36. What is the molarity of a solution containing 56 grams of solute in 959 mL of solution? (molar mass of solute = 26 g/mol) a. 1.5M b. 2.2M c. 2.1M d. 0.0022M ...
AH 2015 incl MG
... A classic chemistry demonstration involves vanadium changing oxidation states. Some zinc metal is added to a flask containing an acidified solution of the dioxovanadium(V) ion, VO2+(aq). The flask is stoppered with some cotton wool and gently swirled. The colour of the solution turns from yellow to ...
... A classic chemistry demonstration involves vanadium changing oxidation states. Some zinc metal is added to a flask containing an acidified solution of the dioxovanadium(V) ion, VO2+(aq). The flask is stoppered with some cotton wool and gently swirled. The colour of the solution turns from yellow to ...
Bis2A 06.Appendix A review of Red/Ox reactions
... Redox reactions that take place in aqueous media often involve water, hydronium ions, and hydroxide ions as reactants or products. Although these species are not oxidized or reduced, they do participate in chemical change in other ways (e.g., by providing the elements required to form oxyanions). Eq ...
... Redox reactions that take place in aqueous media often involve water, hydronium ions, and hydroxide ions as reactants or products. Although these species are not oxidized or reduced, they do participate in chemical change in other ways (e.g., by providing the elements required to form oxyanions). Eq ...
Chapter 7
... Melting Points • There are large attractive forces between the ions. • Their arrangement around each other maximizes these attractive forces and minimizes the repulsive ones. • Therefore, a great deal of energy is required to break the bonds between ions in an ionic compound. ...
... Melting Points • There are large attractive forces between the ions. • Their arrangement around each other maximizes these attractive forces and minimizes the repulsive ones. • Therefore, a great deal of energy is required to break the bonds between ions in an ionic compound. ...
PPT - mvhs-fuhsd.org
... Enthalpy is an extensive property. hence it is proportional to the amount of reactants and products. e.g. for decomposition of two moles of water twice as much energy is needed as for one mole of water. H for a reaction in the forward direction is equal in size, but opposite in sign, to H for the ...
... Enthalpy is an extensive property. hence it is proportional to the amount of reactants and products. e.g. for decomposition of two moles of water twice as much energy is needed as for one mole of water. H for a reaction in the forward direction is equal in size, but opposite in sign, to H for the ...
Molecular Modeling Activity for Carbohydrates
... foods such as bread, beans, milk, popcorn, potatoes, cookies, spaghetti, corn, and cherry pie. In this activity, you will; - learn to interpret the molecular and structural formulas of some carbohydrates. - construct molecular models of some carbohydrates. - learn about the various functions carbohy ...
... foods such as bread, beans, milk, popcorn, potatoes, cookies, spaghetti, corn, and cherry pie. In this activity, you will; - learn to interpret the molecular and structural formulas of some carbohydrates. - construct molecular models of some carbohydrates. - learn about the various functions carbohy ...
Belarus, National Final, 2008 (PDF 405K).
... c) Ammonia and urea are examples of weak bases. Weak bases partially dissociate in water according to the equation: X + H2O ' HX+ + OH–. The equilibrium constants for this dissociation are 1.8 ×10−5 for ammonia and 1.5 ×10−14 for urea. Calculate the pH values of 0.10 M aqueous NH3 and 0.10 M aqueous ...
... c) Ammonia and urea are examples of weak bases. Weak bases partially dissociate in water according to the equation: X + H2O ' HX+ + OH–. The equilibrium constants for this dissociation are 1.8 ×10−5 for ammonia and 1.5 ×10−14 for urea. Calculate the pH values of 0.10 M aqueous NH3 and 0.10 M aqueous ...
Phy 211: General Physics I
... The number of sides on a square The number of apples on a desktop ...
... The number of sides on a square The number of apples on a desktop ...
Unit 7 Homework and Lab Packet
... The mole is a convenient unit for analyzing chemical reactions. The mole is equal to 6.02x1023 particles, or Avogadro’s number of particles. More importantly, however, the mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, or atomic mass. Simply ...
... The mole is a convenient unit for analyzing chemical reactions. The mole is equal to 6.02x1023 particles, or Avogadro’s number of particles. More importantly, however, the mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, or atomic mass. Simply ...
Paper - Revision Science
... C it has more than one oxidation state. D it cannot be poisoned. (Total for Question 12 = 1 mark) 13 In the reaction of benzene with chloromethane, aluminium chloride is added because it reacts with A benzene to produce an electrophile. B benzene to produce a nucleophile. C chloromethane to produce ...
... C it has more than one oxidation state. D it cannot be poisoned. (Total for Question 12 = 1 mark) 13 In the reaction of benzene with chloromethane, aluminium chloride is added because it reacts with A benzene to produce an electrophile. B benzene to produce a nucleophile. C chloromethane to produce ...
3.0 Hess`s Law
... • The overall reaction involves the formation rather than the combustion of methane, so the combustion equation for methane is reversed, and its enthalpy changed from negative to positive: CO2(g) + 2H2O(l) → CH4(g) + 2O2(g) ∆H0 = +890.8 kJ ...
... • The overall reaction involves the formation rather than the combustion of methane, so the combustion equation for methane is reversed, and its enthalpy changed from negative to positive: CO2(g) + 2H2O(l) → CH4(g) + 2O2(g) ∆H0 = +890.8 kJ ...
SCH3U Chemistry 11 Course Notes 2015
... 4. Type in a valid email address, which you will be able to hide later if you go in & edit your profile. Enter your first name & last name in the appropriate fields. Follow the rest of the instructions for logging in. Caution: Students not using their real name or proper user name format will be dee ...
... 4. Type in a valid email address, which you will be able to hide later if you go in & edit your profile. Enter your first name & last name in the appropriate fields. Follow the rest of the instructions for logging in. Caution: Students not using their real name or proper user name format will be dee ...
Document
... Thermochemical Equations with Energy Terms You are already familiar, from your grade 11 Chemistry course, with the first way to describe the enthalpy change in a chemical reaction: include it as a term in a thermochemical equation. If a reaction is endothermic, it requires a certain quantity of ener ...
... Thermochemical Equations with Energy Terms You are already familiar, from your grade 11 Chemistry course, with the first way to describe the enthalpy change in a chemical reaction: include it as a term in a thermochemical equation. If a reaction is endothermic, it requires a certain quantity of ener ...
CHEMISTRY 123-07 Midterm #1 – Answer key October 14, 2010
... PART II: SHORT ANSWER (Each short answer question has a 1-point value!!) 31. Molarity is defined as the number of moles of solute per volume of solution in liters. 32. Ions that contain atoms of more than one element are called polyatomic ions. 33. Proton donors are known as Brønsted acids. 34. A co ...
... PART II: SHORT ANSWER (Each short answer question has a 1-point value!!) 31. Molarity is defined as the number of moles of solute per volume of solution in liters. 32. Ions that contain atoms of more than one element are called polyatomic ions. 33. Proton donors are known as Brønsted acids. 34. A co ...
Document
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
REACTING MASSES – ACTIVITY SHEET
... a) 13.1g of zinc are added to excess dilute hydrochloric acid. b) Excess zinc is added to 100cm3 of 2 moll-1 hydrochloric acid. 9. 12.25g potassium chlorate (KlO3) on heating decomposed to potassium chloride and oxygen. Calculate the volume of oxygen produced. (When the molar gas volume is 22.4L) ...
... a) 13.1g of zinc are added to excess dilute hydrochloric acid. b) Excess zinc is added to 100cm3 of 2 moll-1 hydrochloric acid. 9. 12.25g potassium chlorate (KlO3) on heating decomposed to potassium chloride and oxygen. Calculate the volume of oxygen produced. (When the molar gas volume is 22.4L) ...
1 Mole
... Reactants: chemicals that react Products: chemicals that are formed e.x. sodium + oxygen sodium oxide Na(s) + O2(g) Na2O(s) ...
... Reactants: chemicals that react Products: chemicals that are formed e.x. sodium + oxygen sodium oxide Na(s) + O2(g) Na2O(s) ...
Chemistry and the material world
... Systems that are not at equilibrium can be described by a similar ...
... Systems that are not at equilibrium can be described by a similar ...
AP Chemistry Chapter 16
... -gives information as to "if" a reaction will occur, but NOT "when or how fast" -important to realize rate is not dependent on spontaneity. Spontaneity means it will happen - not necessarily quickly, or even in a person's lifetime Thermodynamics - used to let us predict if a process will occur ENTRO ...
... -gives information as to "if" a reaction will occur, but NOT "when or how fast" -important to realize rate is not dependent on spontaneity. Spontaneity means it will happen - not necessarily quickly, or even in a person's lifetime Thermodynamics - used to let us predict if a process will occur ENTRO ...
Equilibrium Electrochemistry
... one can be considered as making a characteristics contributions to the overall cell potential. although it is not possible to measure the contribution of a single electrode, we can define the potential of one of the electrodes as zero & then assign values to others on that basis. the specially s ...
... one can be considered as making a characteristics contributions to the overall cell potential. although it is not possible to measure the contribution of a single electrode, we can define the potential of one of the electrodes as zero & then assign values to others on that basis. the specially s ...
Fall 2013 Final practice questions w/o solution
... 26. Boron has two isotopes; one of these is boron-10 with a mass of 10.0129 amu and a percent abundance of 19.91%. If the universal mass of boron is 10.811, what is the mass of the other isotope of boron. A) 11.01 amu B) 44.29 amu C) 14.02 amu D) 10.90 amu E) There is not enough information to answ ...
... 26. Boron has two isotopes; one of these is boron-10 with a mass of 10.0129 amu and a percent abundance of 19.91%. If the universal mass of boron is 10.811, what is the mass of the other isotope of boron. A) 11.01 amu B) 44.29 amu C) 14.02 amu D) 10.90 amu E) There is not enough information to answ ...
aq - Wikispaces
... The table on the left gives the eight most commonly used prefixes in the metric system. It also includes five rows that do not have prefixes. The middle row is for the unit: metre, litre, gram, newton, or any other legal metric unit. ...
... The table on the left gives the eight most commonly used prefixes in the metric system. It also includes five rows that do not have prefixes. The middle row is for the unit: metre, litre, gram, newton, or any other legal metric unit. ...
Part-1
... Abnormal Molecular Mass : When the molecular mass of a substance as determined by using colligative properties, does not come out to be the same as expected theoretically, it is said to show abnormal molecular mass. Abnormal molecular mass is dissociation (e.g. NaCl in water) Dissociation results in ...
... Abnormal Molecular Mass : When the molecular mass of a substance as determined by using colligative properties, does not come out to be the same as expected theoretically, it is said to show abnormal molecular mass. Abnormal molecular mass is dissociation (e.g. NaCl in water) Dissociation results in ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.