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CHEM104 Examlette 1 – ANSWERS TOTAL POINTS = 94 Multiple
... c) Pick one type of solid from (a) and explain what energies and forces are involved when the solid dissolves in a liquid to make a solution. (4 pts): The strong ionic bonding in ionic alts must be broken—this is the negative of the lattice enthalpy— and is very endothermic. This is compensated by t ...
... c) Pick one type of solid from (a) and explain what energies and forces are involved when the solid dissolves in a liquid to make a solution. (4 pts): The strong ionic bonding in ionic alts must be broken—this is the negative of the lattice enthalpy— and is very endothermic. This is compensated by t ...
Alkanes Chapter 1.1
... • Stereoisomers (sometimes called geometric isomers) are molecules that have the same chemical formula and structural backbone, but with a different arrangement of atoms in space • Cis isomer: a stereoisomer in which the groups of interest are located on the same side • Trans isomer: a stereoisomer ...
... • Stereoisomers (sometimes called geometric isomers) are molecules that have the same chemical formula and structural backbone, but with a different arrangement of atoms in space • Cis isomer: a stereoisomer in which the groups of interest are located on the same side • Trans isomer: a stereoisomer ...
The Mole I
... 4NO + 6H2O 4NH3 + 5O2 we could say that 4NH3 molecules react with 5 O2 molecules to produce ____ NO molecules and ____ H2O molecules. One dozen represents ______ of something. We could also say that 4 dozen NH3 molecules react with 5 dozen O2 molecules to produce _____ dozen NO molecules and __ ...
... 4NO + 6H2O 4NH3 + 5O2 we could say that 4NH3 molecules react with 5 O2 molecules to produce ____ NO molecules and ____ H2O molecules. One dozen represents ______ of something. We could also say that 4 dozen NH3 molecules react with 5 dozen O2 molecules to produce _____ dozen NO molecules and __ ...
File - Varsity Field
... Q7. Ammonium sulphate reacts with sodium hydroxide: Q8. Rhodocrosite, a red mineral, consists largely of manganese II carbonate. Write an equation for the reaction of the mineral with hydrochloric acid. Name the products. Q9. Sodium sulphite and acetic acid react. Q10. Write a balanced, net ionic eq ...
... Q7. Ammonium sulphate reacts with sodium hydroxide: Q8. Rhodocrosite, a red mineral, consists largely of manganese II carbonate. Write an equation for the reaction of the mineral with hydrochloric acid. Name the products. Q9. Sodium sulphite and acetic acid react. Q10. Write a balanced, net ionic eq ...
Atomic emission spectrum
... This line spectrum is also called the Atomic Spectrum because it originates in the element. Each element has a different atomic spectrum.The production of line spectra by the atoms of an element, indicates that an atom can radiate only certain amount of energy. This leads to the conclusion that e ...
... This line spectrum is also called the Atomic Spectrum because it originates in the element. Each element has a different atomic spectrum.The production of line spectra by the atoms of an element, indicates that an atom can radiate only certain amount of energy. This leads to the conclusion that e ...
Tugas Kimia Umum
... only has angular momentum quantum number 1, that causes the magnetic quantum number only can be filled by number -1, 0, and +1. 5. Write a full set of quantum numbers for the following: (a). outermost electron in an Li atom; (b). The electron gained when a Br atom becomes a Br- ion; (c). The electro ...
... only has angular momentum quantum number 1, that causes the magnetic quantum number only can be filled by number -1, 0, and +1. 5. Write a full set of quantum numbers for the following: (a). outermost electron in an Li atom; (b). The electron gained when a Br atom becomes a Br- ion; (c). The electro ...
2.0 Chem 20 Final Review
... ▫ Hydrogen nucleus (proton) is simultaneously attracted to two pairs of electrons; one closer (in the same molecule) and one further away (a lone pair on the next molecule) Why do you need a strongly electronegative atom? It pulls the hydrogen’s ...
... ▫ Hydrogen nucleus (proton) is simultaneously attracted to two pairs of electrons; one closer (in the same molecule) and one further away (a lone pair on the next molecule) Why do you need a strongly electronegative atom? It pulls the hydrogen’s ...
Chapter 23
... 6. Molecular Orbitals for Homonuclear Diatomic Molecules 7. The Electronic Structure of Many-Electron Molecules 8. Bond Order, Bond Energy, and Bond Length 9. Heteronuclear Diatomic Molecules 10. The Molecular Electrostatic Potential ...
... 6. Molecular Orbitals for Homonuclear Diatomic Molecules 7. The Electronic Structure of Many-Electron Molecules 8. Bond Order, Bond Energy, and Bond Length 9. Heteronuclear Diatomic Molecules 10. The Molecular Electrostatic Potential ...
New Bloch Period for Interacting Cold Atoms in 1D Optical Lattices
... been a longstanding problem since the early days of quantum mechanics. A topic of particular interest in this wide field is the dynamics of a quantum particle in a periodic potential induced by a static force (modeling a crystal electron in an electric field). In this system, the effect of the field ...
... been a longstanding problem since the early days of quantum mechanics. A topic of particular interest in this wide field is the dynamics of a quantum particle in a periodic potential induced by a static force (modeling a crystal electron in an electric field). In this system, the effect of the field ...
1) Basic familiarity with Atomic Labels. You will need a Periodic
... 6.3) Caffeine, a stimulant in coffee and tea and often found in OTC painkillers, has a molar mass of 194.19g/mol and mass composition 49.48% C, 5.19% H, 28.85% N and 16.48% O. What is the molecular formula of caffeine? 6.4) Ethyne and benzene both have the same empirical formula, CH. Look up (anywhe ...
... 6.3) Caffeine, a stimulant in coffee and tea and often found in OTC painkillers, has a molar mass of 194.19g/mol and mass composition 49.48% C, 5.19% H, 28.85% N and 16.48% O. What is the molecular formula of caffeine? 6.4) Ethyne and benzene both have the same empirical formula, CH. Look up (anywhe ...
Lab
... The interactions of the atomic orbitals to form molecular orbitals is represented by an energy diagram called a molecular orbital diagram. The diagram displays the orbitals arranged vertically from lowest to highest energy. The atomic orbitals for the various atoms are listed in columns at the left ...
... The interactions of the atomic orbitals to form molecular orbitals is represented by an energy diagram called a molecular orbital diagram. The diagram displays the orbitals arranged vertically from lowest to highest energy. The atomic orbitals for the various atoms are listed in columns at the left ...
Notes: Moles
... Hydrates Notes: Explain what hydrates are and what their structures look like: o Ionic compounds sometimes have water molecules that adhere to the metal ion in the compound. Such compounds are called hydrates. o These water molecules aren’t tightly bonded but rather loosely associated with them. ...
... Hydrates Notes: Explain what hydrates are and what their structures look like: o Ionic compounds sometimes have water molecules that adhere to the metal ion in the compound. Such compounds are called hydrates. o These water molecules aren’t tightly bonded but rather loosely associated with them. ...
Quantum information processing with atoms and ions
... of external and internal degrees of freedom. The first ones are closely related to the center of mass motion of each ion, whereas the second ones are related to the motion of electrons within each atom, as well as to the presence of electronic and nuclear spins, and are responsible for the existence ...
... of external and internal degrees of freedom. The first ones are closely related to the center of mass motion of each ion, whereas the second ones are related to the motion of electrons within each atom, as well as to the presence of electronic and nuclear spins, and are responsible for the existence ...
3: Haloalkanes, Alcohols, Ethers, and Amines
... The general formulas R-X, R-OH, and R-NH2 suggest two different ways to view these classes of compounds. One way is for us to imagine that an alkyl group R replaces H in HNH2 (ammonia), H-OH (water), and the hydrogen halides H-X (X = F, Cl, Br, or I). We can also view haloalkanes (R-X), alcohols (R- ...
... The general formulas R-X, R-OH, and R-NH2 suggest two different ways to view these classes of compounds. One way is for us to imagine that an alkyl group R replaces H in HNH2 (ammonia), H-OH (water), and the hydrogen halides H-X (X = F, Cl, Br, or I). We can also view haloalkanes (R-X), alcohols (R- ...
6.1 Coulomb interaction energy among charged particles in an atom
... Thus the problem of solving eq 6.20 is reduced to that of determining the “radial” functions R(r). In order to find them, one substitutes of eq 6.23 into eq 6.20, and simplifies. You should verify that the resultant equation for R(r) is eq 6.24 The purpose up to this point has been to demonstrate ho ...
... Thus the problem of solving eq 6.20 is reduced to that of determining the “radial” functions R(r). In order to find them, one substitutes of eq 6.23 into eq 6.20, and simplifies. You should verify that the resultant equation for R(r) is eq 6.24 The purpose up to this point has been to demonstrate ho ...
Dmitri Mendeleev
... The most important metalloids are silicon (Si) and germanium (Ge) which are used extensively in computer chips. ...
... The most important metalloids are silicon (Si) and germanium (Ge) which are used extensively in computer chips. ...
Spectroscopy of Atoms and Molecules
... excited Sodium (Na) atoms emit visible photons of wavelengths 568.8205nm, 588.9950nm, and 589,5924nm; with the latter two so-called D-Lines being much more intense than the first. Thus, the yellow color we see emitted by Na atoms is dominated by these two intense D-Lines, which occur in the Yellow r ...
... excited Sodium (Na) atoms emit visible photons of wavelengths 568.8205nm, 588.9950nm, and 589,5924nm; with the latter two so-called D-Lines being much more intense than the first. Thus, the yellow color we see emitted by Na atoms is dominated by these two intense D-Lines, which occur in the Yellow r ...
Regents Chemistry Topic Review Packet
... You can recognize an excited state electron configuration. If the configuration does not match that on the Periodic Table for that number of electrons, then it is an excited state. 9. When an electron returns from a higher energy state to a lower energy state, it emits a specific amount of energy ...
... You can recognize an excited state electron configuration. If the configuration does not match that on the Periodic Table for that number of electrons, then it is an excited state. 9. When an electron returns from a higher energy state to a lower energy state, it emits a specific amount of energy ...
- Deans Community High School
... 1. Controlling the Rate of Reaction 1. Two identical samples of zinc were added to an excess of two solutions of sulphuric acid, concentrations 2 mol l-1 and 1 mol l-1 respectively. Which of the following would have been the same for the two samples? A. The total mass lost B. The total time for the ...
... 1. Controlling the Rate of Reaction 1. Two identical samples of zinc were added to an excess of two solutions of sulphuric acid, concentrations 2 mol l-1 and 1 mol l-1 respectively. Which of the following would have been the same for the two samples? A. The total mass lost B. The total time for the ...
Regents Chemistry Topic Review Packet
... You can recognize an excited state electron configuration. If the configuration does not match that on the Periodic Table for that number of electrons, then it is an excited state. 9. When an electron returns from a higher energy state to a lower energy state, it emits a specific amount of energy ...
... You can recognize an excited state electron configuration. If the configuration does not match that on the Periodic Table for that number of electrons, then it is an excited state. 9. When an electron returns from a higher energy state to a lower energy state, it emits a specific amount of energy ...
Section 1.6 - 1 1.6 Term Symbols A brief general review of atomic
... Total Angular Momentum in Many Electron Atoms: Finding J and MJ Applying the Russel-Saunders Scheme: to our C example… • As the carbon atom is a light atom we can now use the Russell-Saunders coupling scheme to account for spin-orbit coupling and its effects. • Considering only the 9 microstates of ...
... Total Angular Momentum in Many Electron Atoms: Finding J and MJ Applying the Russel-Saunders Scheme: to our C example… • As the carbon atom is a light atom we can now use the Russell-Saunders coupling scheme to account for spin-orbit coupling and its effects. • Considering only the 9 microstates of ...
A Review of High School Chemistry
... Dalton came along in the early 1800s and proposed that these elemental materials were made up of very small, indivisible particles he called ATOMS. Dalton was to provide the framework for a theory, which although not perfect, launched the modern age of chemistry and physics. Here are some ideas of D ...
... Dalton came along in the early 1800s and proposed that these elemental materials were made up of very small, indivisible particles he called ATOMS. Dalton was to provide the framework for a theory, which although not perfect, launched the modern age of chemistry and physics. Here are some ideas of D ...
Chemical bond
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are ""strong bonds"" such as covalent or ionic bonds and ""weak bonds"" such as Dipole-dipole interaction, the London dispersion force and hydrogen bonding.Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons that are orbiting the nucleus and the positively charged protons in the nucleus attract each other. An electron positioned between two nuclei will be attracted to both of them, and the nuclei will be attracted toward electrons in this position. This attraction constitutes the chemical bond. Due to the matter wave nature of electrons and their smaller mass, they must occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves. This phenomenon limits the distance between nuclei and atoms in a bond.In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases—indeed most of the physical environment around us—are held together by chemical bonds, which dictate the structure and the bulk properties of matter.All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory. Electrostatics are used to describe bond polarities and the effects they have on chemical substances.