12.1 Avogadro`s Law and Molar Volume
... molecules as a container with 1.0 L of N2 at STP, even though the mass of nitrogen is 14 times greater. The pressure is directly related to the number of particles in each container of gas. So if each container had the same amount of pressure, there would be no difference in the number of particles. ...
... molecules as a container with 1.0 L of N2 at STP, even though the mass of nitrogen is 14 times greater. The pressure is directly related to the number of particles in each container of gas. So if each container had the same amount of pressure, there would be no difference in the number of particles. ...
Study Guide
... nitrogen, 555mmHg; oxygen, 149 mmHg; water vapor, 13 mmHg; argon, 7 mmHg. What is the total pressure of this mixture? 32. Choose the best one from each pair in the following sentence: The closest approach to ideal gas behavior will be shown by (NH3 or H2?) at (low or high?) pressure and (low or high ...
... nitrogen, 555mmHg; oxygen, 149 mmHg; water vapor, 13 mmHg; argon, 7 mmHg. What is the total pressure of this mixture? 32. Choose the best one from each pair in the following sentence: The closest approach to ideal gas behavior will be shown by (NH3 or H2?) at (low or high?) pressure and (low or high ...
unit 6 - writing and balancing chemical equations
... another, mixtures can be separated or made, and pure substances can be decomposed, but the total amount of mass remains constant. We can state this important law in another way. The total mass of the universe is constant within measurable limits; whenever matter undergoes a change, the total mass of ...
... another, mixtures can be separated or made, and pure substances can be decomposed, but the total amount of mass remains constant. We can state this important law in another way. The total mass of the universe is constant within measurable limits; whenever matter undergoes a change, the total mass of ...
Questions 1-2
... (B) The hydrogen bonding increases. (C) The dipole-dipole forces increase. (D) The chemical reactivity increases. ...
... (B) The hydrogen bonding increases. (C) The dipole-dipole forces increase. (D) The chemical reactivity increases. ...
Day 13 Main Group Pt 1
... ranks with fluorine and oxygen in its ability to form strong covalent bonds. The table below lists the twenty strongest covalent bonds for which reasonable values are known. Nearly half of the entries on this list involves hydrogen including all of the elements between hydrogen and the second period ...
... ranks with fluorine and oxygen in its ability to form strong covalent bonds. The table below lists the twenty strongest covalent bonds for which reasonable values are known. Nearly half of the entries on this list involves hydrogen including all of the elements between hydrogen and the second period ...
CHM 101 - Academic Computer Center
... water, are carried by athletic trainers when transporting ice is not possible. Which of the following is true of this reaction? A. H < 0, process is exothermic B. H > 0, process is exothermic C. H < 0, process is endothermic D. H > 0, process is endothermic E. H = 0, since cold packs are sealed ...
... water, are carried by athletic trainers when transporting ice is not possible. Which of the following is true of this reaction? A. H < 0, process is exothermic B. H > 0, process is exothermic C. H < 0, process is endothermic D. H > 0, process is endothermic E. H = 0, since cold packs are sealed ...
Fundamentals of General Chemistry and Physical Chemistry for
... 1.6 Molecular Compounds and Their Properties. compounds of carbon: the number and complexity of carbon compounds is enormous, and their study constitutes the major specialty called "organic chemistry ...
... 1.6 Molecular Compounds and Their Properties. compounds of carbon: the number and complexity of carbon compounds is enormous, and their study constitutes the major specialty called "organic chemistry ...
Chemistry 21 A - El Camino College
... f) Cr2O72-(aq) + 2H+(aq) + 3Mn2+(aq) → 2Cr3+(aq) + 3MnO2(s) + H2O(l) 14. Consider all of the following compounds to be water soluble and write the formulas of the ions that would be formed if the compoundes were disolved in water. ...
... f) Cr2O72-(aq) + 2H+(aq) + 3Mn2+(aq) → 2Cr3+(aq) + 3MnO2(s) + H2O(l) 14. Consider all of the following compounds to be water soluble and write the formulas of the ions that would be formed if the compoundes were disolved in water. ...
Practice Unit D Exam - mvhs
... Then the student pours 25 mL of the 6 M HNO3 into a beaker and adds a 0.6489 g sample of the alloy. After the sample completely reacts with the acid, some saturated NaCl(aq) is added to the beaker, resulting in the formation of an AgCl precipitate. Additional NaCl(aq) is added until no more precipit ...
... Then the student pours 25 mL of the 6 M HNO3 into a beaker and adds a 0.6489 g sample of the alloy. After the sample completely reacts with the acid, some saturated NaCl(aq) is added to the beaker, resulting in the formation of an AgCl precipitate. Additional NaCl(aq) is added until no more precipit ...
Chemistry II Exams and Keys 2014 Season
... 22. Green light has sufficient energy to break the bond between two chlorine atoms. Yellow light cannot break the bond between two chlorine atoms. Which of the following statements are correct? Use these values for the average bond strengths: Br-Br (193 kJ/mol) and Cl-Cl (233 kJ/mol). I. Blue light ...
... 22. Green light has sufficient energy to break the bond between two chlorine atoms. Yellow light cannot break the bond between two chlorine atoms. Which of the following statements are correct? Use these values for the average bond strengths: Br-Br (193 kJ/mol) and Cl-Cl (233 kJ/mol). I. Blue light ...
Document
... Acid: produces H+ ions in aqueous solutions Base: produces OH- ions in aqueous solutions Strong acids dissociate completely (they are strong electrolytes) - there are 6 common ones: HCl HBr HI HNO3 H2SO4 HClO4 Weak acids are other formulas that start with H such as: HF HC2H3O2 Strong bases are the s ...
... Acid: produces H+ ions in aqueous solutions Base: produces OH- ions in aqueous solutions Strong acids dissociate completely (they are strong electrolytes) - there are 6 common ones: HCl HBr HI HNO3 H2SO4 HClO4 Weak acids are other formulas that start with H such as: HF HC2H3O2 Strong bases are the s ...
Ch. 7 & 8 Notes (Chemical Reactions) teacher
... The coefficients represent either the number of _________ molecules present. liters if the substances are The coefficients can also represent _________ gases. ...
... The coefficients represent either the number of _________ molecules present. liters if the substances are The coefficients can also represent _________ gases. ...
Synthesis/Decomposition Reactions
... In these reactions, two different molecules or atoms combine to form a single substance. ...
... In these reactions, two different molecules or atoms combine to form a single substance. ...
AP Chemistry Note Outline
... 6. Cancel out any extra water and OH7. Balance Charge with e8. Multiply reactions by factors such that the e- cancel Add both ½ reactions ...
... 6. Cancel out any extra water and OH7. Balance Charge with e8. Multiply reactions by factors such that the e- cancel Add both ½ reactions ...
R= 8.31 J/mol K = 0.0821 L atm/mol K = 62.4 L torr/mol K PV = nRT
... ______13. A tank contains 32.00 grams of O2 gas and 16.00 grams of He gas. If the partial pressure of the oxygen gas is 0.400 atm, what is the total pressure of the gases in the tank? A) 0.800 atm. B) 0.600 atm C) 1.20 atm D) 1.60 atm E) 2.00 atm ______14. Samples of Ne gas and He gas are mixed in a ...
... ______13. A tank contains 32.00 grams of O2 gas and 16.00 grams of He gas. If the partial pressure of the oxygen gas is 0.400 atm, what is the total pressure of the gases in the tank? A) 0.800 atm. B) 0.600 atm C) 1.20 atm D) 1.60 atm E) 2.00 atm ______14. Samples of Ne gas and He gas are mixed in a ...
H 2 (g)
... • In a coffee cup calorimeter, 1.60g of ammonium nitrate is mixed with 75.0g of water at an initial temperature of 25.00˚C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.34˚C. Assuming the solution has a heat capacity of 4.18 J/˚Cg and assuming no heat loss ...
... • In a coffee cup calorimeter, 1.60g of ammonium nitrate is mixed with 75.0g of water at an initial temperature of 25.00˚C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.34˚C. Assuming the solution has a heat capacity of 4.18 J/˚Cg and assuming no heat loss ...
CHAPTER 2: THE ATOMS AND MOLECULES OF ANCIENT EARTH
... (molecules that can give up electrons). 1. Volcanic ash is known to be rich in CO2, H2O, and N2. 2. Recent evidence indicates it also has small amounts of CH4, H2, and NH3. C. Once organic molecules formed, only heat was needed to drive formation of more complex organic molecules to complete chemica ...
... (molecules that can give up electrons). 1. Volcanic ash is known to be rich in CO2, H2O, and N2. 2. Recent evidence indicates it also has small amounts of CH4, H2, and NH3. C. Once organic molecules formed, only heat was needed to drive formation of more complex organic molecules to complete chemica ...
Chapter 11.1: Describing Chemical Reactions
... catalyst is a substance that can be added to speed up the reaction but is not used up in a reaction. It is neither a product or a reactant. ...
... catalyst is a substance that can be added to speed up the reaction but is not used up in a reaction. It is neither a product or a reactant. ...
Hebden V.2 – Oxidation Numbers
... always assume neutral unless one of the chemicals is an acid 3. find the highest reduction reaction (OA) 4. find the lowest oxidation reaction (RA) 5. Write the half reactions and add them together 6. Add the electric potentials to find out how much voltage must be in the external power source ...
... always assume neutral unless one of the chemicals is an acid 3. find the highest reduction reaction (OA) 4. find the lowest oxidation reaction (RA) 5. Write the half reactions and add them together 6. Add the electric potentials to find out how much voltage must be in the external power source ...
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.