Unit 3 - Salina USD 305
... Each player selects a game piece. Play begins with the student with the longest name. The student rolls a cation dice and an anion dice. Based on what the dice land on, the student will say the formula and the name for the compound. It is up to the other members of the group to determine if the name ...
... Each player selects a game piece. Play begins with the student with the longest name. The student rolls a cation dice and an anion dice. Based on what the dice land on, the student will say the formula and the name for the compound. It is up to the other members of the group to determine if the name ...
Stoichiometry - Bruder Chemistry
... Avagadro’s Hypothesis - at the same temperature and pressure equal volumes of gas have the same number of particles. ...
... Avagadro’s Hypothesis - at the same temperature and pressure equal volumes of gas have the same number of particles. ...
Chemistry Definitions
... 6. One mole of a substance contains the same number of particles as there are in 12g of the 12-Carbon isotope 7. Avogadro’s Constant: L= 6.02 x 1023mol-1 8. Molar mass: The mass of one mole of a substance 9. Stoichiometry: The study of quantitative aspects of chemical formulae and reactions. It invo ...
... 6. One mole of a substance contains the same number of particles as there are in 12g of the 12-Carbon isotope 7. Avogadro’s Constant: L= 6.02 x 1023mol-1 8. Molar mass: The mass of one mole of a substance 9. Stoichiometry: The study of quantitative aspects of chemical formulae and reactions. It invo ...
JJ Thompson Webquest
... proportion by mass).” Proposed an "atomic theory" with spherical solid atoms based upon measurable properties of mass. All matter was composed of small indivisible particles termed atoms Atoms of a given element possess unique characteristics and weight ...
... proportion by mass).” Proposed an "atomic theory" with spherical solid atoms based upon measurable properties of mass. All matter was composed of small indivisible particles termed atoms Atoms of a given element possess unique characteristics and weight ...
chemical reactions
... 1. Even though mass of N2O4 is greater than N2H4, there are fewer moles of it due to its larger molar mass. 2. Limiting reactant calculations must always be done when amount of both reactants are given. ...
... 1. Even though mass of N2O4 is greater than N2H4, there are fewer moles of it due to its larger molar mass. 2. Limiting reactant calculations must always be done when amount of both reactants are given. ...
Chapters 1-4 Numbers and Measurements in Chemistry Units SI
... – “How much?” of a p product is p produced or reactant is consumed. – Balanced chemical equation needed. – Conversion between mass or volume to number of moles frequently needed. ...
... – “How much?” of a p product is p produced or reactant is consumed. – Balanced chemical equation needed. – Conversion between mass or volume to number of moles frequently needed. ...
Chapter 6A Chemical Reactions CHAPTER OUTLINE
... q The physical state of the substances are indicated by the symbols (s), (l), (g), (aq). Δ 2 Al (s) + Fe2O3 (s) → 2 Fe (l) + Al2O3 (s) solid ...
... q The physical state of the substances are indicated by the symbols (s), (l), (g), (aq). Δ 2 Al (s) + Fe2O3 (s) → 2 Fe (l) + Al2O3 (s) solid ...
Thermodynamics: Spontaneity, Entropy and Free energy
... Law of Thermodynamics: • 1st Law: Energy in conserved (neither created nor destroyed in any process) • 2nd Law: the total entropy of the universe increases in any spontaneous process. • 3rd Law: the entropy of a pure crystalline substance at absolute zero is zero (S =0) ...
... Law of Thermodynamics: • 1st Law: Energy in conserved (neither created nor destroyed in any process) • 2nd Law: the total entropy of the universe increases in any spontaneous process. • 3rd Law: the entropy of a pure crystalline substance at absolute zero is zero (S =0) ...
Chemical Reactions
... elements) combine and form a compound. (Sometimes these are called combination or addition reactions.) ...
... elements) combine and form a compound. (Sometimes these are called combination or addition reactions.) ...
Answers to Final Exam Review
... a. E1> E2, as CaCl2 is a covalent bond c. E1> E2, as CaCl2 is an ionic bond b. E1< E2, as CaCl2 is a covalent bond d. E1< E2, as CaCl2 is an ionic bond 32. Given the pairs of atoms below, predict whether the bond formed between the atoms is either ionic or covalent, and if ionic, write the formula f ...
... a. E1> E2, as CaCl2 is a covalent bond c. E1> E2, as CaCl2 is an ionic bond b. E1< E2, as CaCl2 is a covalent bond d. E1< E2, as CaCl2 is an ionic bond 32. Given the pairs of atoms below, predict whether the bond formed between the atoms is either ionic or covalent, and if ionic, write the formula f ...
Sample
... 40- Given the following entropy values (Al2O3 is 51.00; Al(s) is 28.32; H2O(g) is 188.7; H2(g) is 130.6) Determine the standard entropy change (ΔS) for the reaction: Al2O3(s) + 3H2(g) ...
... 40- Given the following entropy values (Al2O3 is 51.00; Al(s) is 28.32; H2O(g) is 188.7; H2(g) is 130.6) Determine the standard entropy change (ΔS) for the reaction: Al2O3(s) + 3H2(g) ...
258-261
... n the last section we saw how to use the balanced equation for a reaction to calculate the numbers of moles of reactants and products for a particular case. However, moles represent numbers of molecules, and we cannot count molecules directly. In chemistry we count by weighing. Therefore, in this se ...
... n the last section we saw how to use the balanced equation for a reaction to calculate the numbers of moles of reactants and products for a particular case. However, moles represent numbers of molecules, and we cannot count molecules directly. In chemistry we count by weighing. Therefore, in this se ...
PRACTICE FINAL EXAM CHEMISTRY 152 This
... The Ecell for a particular electrochemical reaction was found to be Ecell = −1.38 V. This value of Ecell means that this reaction is [a] spontaneous and ∆G° is negative. [c] in an equilibrium state and ∆G° is zero. [e] endothermic and ∆H° is positive. ...
... The Ecell for a particular electrochemical reaction was found to be Ecell = −1.38 V. This value of Ecell means that this reaction is [a] spontaneous and ∆G° is negative. [c] in an equilibrium state and ∆G° is zero. [e] endothermic and ∆H° is positive. ...
Methane - ARZELORIVAS IS
... Once the reaction gets started, it continues after the light is turned off. The products of the reaction include CH2Cl2 (dichloromethane), CHCl3 (chloroform), and CCl4 (carbon tetrachloride), as well as CH3Cl (chloromethane). The reaction also produces some C2H6. ...
... Once the reaction gets started, it continues after the light is turned off. The products of the reaction include CH2Cl2 (dichloromethane), CHCl3 (chloroform), and CCl4 (carbon tetrachloride), as well as CH3Cl (chloromethane). The reaction also produces some C2H6. ...
Chapter 3
... One of the products is metallic mercury Other product of reaction supports combustion. What is this gas? What is the balanced equation for the reaction? ...
... One of the products is metallic mercury Other product of reaction supports combustion. What is this gas? What is the balanced equation for the reaction? ...
Template for calculating the ΔH° in a multiple step chemical reaction
... The combustion of 1.00 mol of glucose, C6H12O6, releases 2820 kJ of heat. If 2.0 g of glucose is burned in a calorimeter containing 1.0 kg of water, and the temperature increases by 3.5 °C, what is the heat capacity of the calorimeter? ...
... The combustion of 1.00 mol of glucose, C6H12O6, releases 2820 kJ of heat. If 2.0 g of glucose is burned in a calorimeter containing 1.0 kg of water, and the temperature increases by 3.5 °C, what is the heat capacity of the calorimeter? ...
Introduction - CNC Science
... Water of crystallisation is water chemically combined but not bonded to a host molecule. Substances containing these crystals are said to be Hydrated those with no crystals of this sort are said to be Anhydrous ...
... Water of crystallisation is water chemically combined but not bonded to a host molecule. Substances containing these crystals are said to be Hydrated those with no crystals of this sort are said to be Anhydrous ...
Answers PRACTICE EXAM II Spring 2008 Part I. Multiple Choice (3
... Part II - Total points = 55. Answer each of the following questions. SHOW ALL WORK ! 1. (10 points) Osmotic pressure measurements are routinely used in the determination of molecular weights for high molecular proteins. An African swine fever virus-induced protein (p12) was studied in virus-infecte ...
... Part II - Total points = 55. Answer each of the following questions. SHOW ALL WORK ! 1. (10 points) Osmotic pressure measurements are routinely used in the determination of molecular weights for high molecular proteins. An African swine fever virus-induced protein (p12) was studied in virus-infecte ...
day_3_main_lecture - the Essentially Science Wiki!
... – How many moles of H2O are produced from the reaction of 2 moles of H2? – How many moles of O2 are required to produce 4 moles of H2O? ...
... – How many moles of H2O are produced from the reaction of 2 moles of H2? – How many moles of O2 are required to produce 4 moles of H2O? ...
Atoms and Molecules
... In the human body, the toxic compound hydrogen cyanide is neutralized by the acid, H 2S2O3, according to the reaction: HCN + H2S2O3 HCNS + H2SO3. If 1.000 mg of H2S2O3, is available in the body, will this be enough to neutralize 2.000 mg of HCN swallowed by a person? [hint – focus on the mole rati ...
... In the human body, the toxic compound hydrogen cyanide is neutralized by the acid, H 2S2O3, according to the reaction: HCN + H2S2O3 HCNS + H2SO3. If 1.000 mg of H2S2O3, is available in the body, will this be enough to neutralize 2.000 mg of HCN swallowed by a person? [hint – focus on the mole rati ...
Nuclear Astrophysics (1)
... The chemical potential obtained from the total number density n provides information on energy/momentum distributions of particles. It is only determined up to a constant. If energy generation due to mass differences in reactions is involved, the above equation is correct, if ...
... The chemical potential obtained from the total number density n provides information on energy/momentum distributions of particles. It is only determined up to a constant. If energy generation due to mass differences in reactions is involved, the above equation is correct, if ...
homework assignment 2 - the Petersen Home Page
... excess H2 at elevated temperatures. If the weight percent of Fe2S3 in this mixture is 57.4%, then calculate the total mass in grams of Fe that can be produced. Assume the only other product of these reactions is H2S. 2. A mixture of elemental carbon and sulfur has a mass of 9.00 g. The complete comb ...
... excess H2 at elevated temperatures. If the weight percent of Fe2S3 in this mixture is 57.4%, then calculate the total mass in grams of Fe that can be produced. Assume the only other product of these reactions is H2S. 2. A mixture of elemental carbon and sulfur has a mass of 9.00 g. The complete comb ...
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.