CHEMISTRY 101 Name Mock Final Exam Spring 2014 Signature Dr
... Ionization energies are generally endothermic. “Lower in energy” also means “more stable”. The ground state is the lowest energy state. In an exothermic chemical reaction, the products are more stable than the reactants. All of the above statements (a-d) are true. ...
... Ionization energies are generally endothermic. “Lower in energy” also means “more stable”. The ground state is the lowest energy state. In an exothermic chemical reaction, the products are more stable than the reactants. All of the above statements (a-d) are true. ...
Name: 1) The modern model of the atom is based on the work of A
... A) the number of protons in the atom B) the number of valence electrons in the atom C) the number of neutrons in the atom D) the total number of electrons in the atom ...
... A) the number of protons in the atom B) the number of valence electrons in the atom C) the number of neutrons in the atom D) the total number of electrons in the atom ...
2009 - NESACS
... 47. Dianabol is one of the anabolic steroids that have been used by some athletes to increase the size and strength of their muscles. Dianabol consists of carbon, hydrogen, and oxygen. A sample of 14.765 g of Dianabol is burned, and 43.257 g CO2 and 12.395 g H2O are formed. What is the empirical for ...
... 47. Dianabol is one of the anabolic steroids that have been used by some athletes to increase the size and strength of their muscles. Dianabol consists of carbon, hydrogen, and oxygen. A sample of 14.765 g of Dianabol is burned, and 43.257 g CO2 and 12.395 g H2O are formed. What is the empirical for ...
work book 1-3
... 3. Cathode rays are electrically neutral but α-particles are negatively charged. 4. The structure of a-particles is similar to that of hydrogen atom 5. The scientist Bohr determined that almost all of an atom’s mass is located in its nucleus. 6. Bohr used the magnetic quantum number (m) in explainin ...
... 3. Cathode rays are electrically neutral but α-particles are negatively charged. 4. The structure of a-particles is similar to that of hydrogen atom 5. The scientist Bohr determined that almost all of an atom’s mass is located in its nucleus. 6. Bohr used the magnetic quantum number (m) in explainin ...
Chapter 3
... produced if there is enough oxygen gas to react with all of the CO. A) 7.20 mol B) 44.0 mol C) 3.60 mol D) 1.80 mol Nitrous oxide (N2O) is also called “laughing gas.” It can be prepared by the thermal decomposition of ammonium nitrate (NH4NO3). The other product is H2O. The balanced equation for thi ...
... produced if there is enough oxygen gas to react with all of the CO. A) 7.20 mol B) 44.0 mol C) 3.60 mol D) 1.80 mol Nitrous oxide (N2O) is also called “laughing gas.” It can be prepared by the thermal decomposition of ammonium nitrate (NH4NO3). The other product is H2O. The balanced equation for thi ...
Answers - U of L Class Index
... pass through biological tissues, and they do most of their damage just as they are about to stop. By choosing their energy correctly, it is therefore possible to target a tumor at a very specific depth, causing much less damage to intervening tissues. In one particular operation, protons with a kine ...
... pass through biological tissues, and they do most of their damage just as they are about to stop. By choosing their energy correctly, it is therefore possible to target a tumor at a very specific depth, causing much less damage to intervening tissues. In one particular operation, protons with a kine ...
Chapter 1 - TamAPChemistryHart
... 11. Classify each of the following as a pure substance or a mixture; if a mixture, indicate whether it is homogeneous or heterogeneous: a) rice pudding b) seawater c) magnesium d) gasoline 15. A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white subst ...
... 11. Classify each of the following as a pure substance or a mixture; if a mixture, indicate whether it is homogeneous or heterogeneous: a) rice pudding b) seawater c) magnesium d) gasoline 15. A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white subst ...
An element is a fundamental substance that cannot be chemically
... added together in some random proportion without chemically changing the individual substances themselves. ...
... added together in some random proportion without chemically changing the individual substances themselves. ...
Lab Stuff:
... Write the formulas for the compounds formed between the element or ion pairs listed below: Remember…balance the charges! magnesium and sulfide barium and iodide aluminum and carbonate ion lead(IV) and sulfate sodium and chloride lithium and hydroxide beryllium and hydroxide iron(III) and nitride amm ...
... Write the formulas for the compounds formed between the element or ion pairs listed below: Remember…balance the charges! magnesium and sulfide barium and iodide aluminum and carbonate ion lead(IV) and sulfate sodium and chloride lithium and hydroxide beryllium and hydroxide iron(III) and nitride amm ...
chemistry
... The last page of the booklet is the answer sheet. Fold the last page along the perforations and, slowly and carefully, tear off the answer sheet. Then fill in the heading of your answer sheet. All of your answers are to be recorded on the separate answer sheet. For each question, decide which of the ...
... The last page of the booklet is the answer sheet. Fold the last page along the perforations and, slowly and carefully, tear off the answer sheet. Then fill in the heading of your answer sheet. All of your answers are to be recorded on the separate answer sheet. For each question, decide which of the ...
Lab Stuff
... Write the formulas for the compounds formed between the element or ion pairs listed below: Remember…balance the charges! magnesium and sulfide barium and iodide aluminum and carbonate ion lead(IV) and sulfate sodium and chloride lithium and hydroxide beryllium and hydroxide iron(III) and nitride amm ...
... Write the formulas for the compounds formed between the element or ion pairs listed below: Remember…balance the charges! magnesium and sulfide barium and iodide aluminum and carbonate ion lead(IV) and sulfate sodium and chloride lithium and hydroxide beryllium and hydroxide iron(III) and nitride amm ...
powerpoint
... When a metal replaces a metal in a compound and a nonmetal replaces a nonmetal in a compound A reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two ...
... When a metal replaces a metal in a compound and a nonmetal replaces a nonmetal in a compound A reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two ...
Chapter 4 “Atomic Structure”
... • Dalton studied the ratios in which elements combined during chemical reactions (his experiments showed that the ratios in which elements combined were whole numbers) • Based on the data from his experiments, he then formulated additional hypotheses and theories to explain his observations and test ...
... • Dalton studied the ratios in which elements combined during chemical reactions (his experiments showed that the ratios in which elements combined were whole numbers) • Based on the data from his experiments, he then formulated additional hypotheses and theories to explain his observations and test ...
- erc
... The mass of an atom is concentrated in its nucleus. Atomic mass number (A) is equal to the sum of the number of protons (p) and neutrons (n) in the nucleus. Atomic mass number = No. of Protons + No. of Neutrons ...
... The mass of an atom is concentrated in its nucleus. Atomic mass number (A) is equal to the sum of the number of protons (p) and neutrons (n) in the nucleus. Atomic mass number = No. of Protons + No. of Neutrons ...
A) 0% B) 20% C) 50% D) 80% E) 100% 1. Naturally occurring boron
... 62. Hydrogen gas is collected over water at 29 oC. The total pressure of the system is 773 torr. If the vapor pressure of water at 29 oC is 30 torr, what is the partial pressure 67. Under which conditions does a real gas most closely of the hydrogen gas? approximate an ideal gas? A) 803 torr C) 74 ...
... 62. Hydrogen gas is collected over water at 29 oC. The total pressure of the system is 773 torr. If the vapor pressure of water at 29 oC is 30 torr, what is the partial pressure 67. Under which conditions does a real gas most closely of the hydrogen gas? approximate an ideal gas? A) 803 torr C) 74 ...
Answers to Selected Exercises
... can be expressed as simple whole-number ratios. The g H/g N in hydrazine, ammonia, and hydrogen azide are in the ratios 6:9:1. 23. O, 7.94; Na, 22.8; Mg, 11.9; O and Mg are incorrect by a factor of 2; correct formulas are H2O, Na2O, and MgO. 25. d(nucleus) 3 1015 g/cm3; d(atom) 0.4 g/cm3 27. ...
... can be expressed as simple whole-number ratios. The g H/g N in hydrazine, ammonia, and hydrogen azide are in the ratios 6:9:1. 23. O, 7.94; Na, 22.8; Mg, 11.9; O and Mg are incorrect by a factor of 2; correct formulas are H2O, Na2O, and MgO. 25. d(nucleus) 3 1015 g/cm3; d(atom) 0.4 g/cm3 27. ...
What Are Compounds? - Parma School District
... x(empirical formula mass) = molecular formula mass • To determine the molecular formula of a compound, you must know the compound’s formula mass. – Dividing the experimental formula mass by the empirical formula mass gives the value of x. • A compound’s molecular formula mass is numerically equal to ...
... x(empirical formula mass) = molecular formula mass • To determine the molecular formula of a compound, you must know the compound’s formula mass. – Dividing the experimental formula mass by the empirical formula mass gives the value of x. • A compound’s molecular formula mass is numerically equal to ...
CHEMISTRY Periodic Table of the Elements
... What does the phenolphthalein indicate? What does this mean? Based on part B, what other substance do you think was produced? Why? Rate these 3 metals in order of their reactivity with the water. Write full electron configurations for Li, Na and K. How many electrons do each of them have in their ou ...
... What does the phenolphthalein indicate? What does this mean? Based on part B, what other substance do you think was produced? Why? Rate these 3 metals in order of their reactivity with the water. Write full electron configurations for Li, Na and K. How many electrons do each of them have in their ou ...
111 Exam II Outline
... The Born- Haber cycle uses the law of Hess to determine the Lattice Energy. The lattice energy is the enthalphy change, ∆H, associated when gaseous cations and anions from a crystal: Na+(g) + Cl-(g) NaCl(s) ∆H = - 788KJ Since heat is always evolved in these processes, all lattice energies have a n ...
... The Born- Haber cycle uses the law of Hess to determine the Lattice Energy. The lattice energy is the enthalphy change, ∆H, associated when gaseous cations and anions from a crystal: Na+(g) + Cl-(g) NaCl(s) ∆H = - 788KJ Since heat is always evolved in these processes, all lattice energies have a n ...
Biology, 8e (Campbell) Chapter 2 The Chemical Context of Life
... 16) One difference between carbon-12 ( 126 C) and carbon-14 ( 146 C) is that carbon-14 has A) two more protons than carbon-12. B) two more electrons than carbon-12. C) two more neutrons than carbon-12. D) A and C only E) B and C only Answer: C Topic: Concept 2.2 Skill: Knowledge/Comprehension 17) 3 ...
... 16) One difference between carbon-12 ( 126 C) and carbon-14 ( 146 C) is that carbon-14 has A) two more protons than carbon-12. B) two more electrons than carbon-12. C) two more neutrons than carbon-12. D) A and C only E) B and C only Answer: C Topic: Concept 2.2 Skill: Knowledge/Comprehension 17) 3 ...
