contains nine double bonds and four rings. Based on this additional information‚ what is the formula for terfenedine? (c) Explain the origin of the peak at m/z = 472. (12 pts.) 9. Explain why all protons in a molecule do not absorb rf (radio frequency) energy at the same frequency. (5 pts.) 10. Answer the following questions. (10 pts.) (a) How many
Premium Nuclear magnetic resonance Spectroscopy Chemistry
HKCEE Chemistry 2007 Paper 1 Section A 1. A is a compound formed from oxygen and magnesium‚ while B is a compound formed from oxygen and fluorine. a) Draw the electronic diagram of A‚ showing electrons in he outermost shells only. (1) b) Draw the electronic diagram of B‚ showing electrons in the outermost shells only. (1) c) Compare the melting points of A and B. Explains your answer. Melting point of A is higher than that of B. Ions of A are linked by strong ionic bonds / electrostatic
Premium Chlorine Sodium hydroxide
C7 Further Chemistry OCR 21st Century: 2011 specification Made by Nabilah Chowdhury Copyrighted References: OCR 21st Century Further Sciences Book‚ CGP: OCR 21st century + various internet sources Topic 1: Green Industry Brief Intro 14/06/13 Natural resources are converted into useful products. Bulk chemicals produced on a large scale b/c there is a larger demand for them. Fine chemical are produced on a smaller scale. They’re used as feedstock’s
Premium Nitrogen
Chemistry * a science that dealing with the structure‚ composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal combustion
Premium Chemistry Atom Hydrogen
CHAPTER # 1 Q.DEFINE CHEMISTRY. A. Chemistry‚ a branch of physical science‚ is the study of the composition‚ properties and behavior of matter. Chemistry is concerned with atoms and their interactions with other atoms‚ and particularly with the properties of chemical bonds. Chemistry is also concerned with the interactions between atoms and various forms of energy Q.DEFINE THE BRANCHES OF CHEMISTRY. * Physical chemistry is the study of macroscopic‚ atomic‚ subatomic‚ and particulate phenomena
Premium Chemistry
Lyons Document Storage Corporation: Bond Accounting In December 2008 Rene Cook sat in her cubicle trying to remember what she had learned in business school about bonds and bond accounting. Ms. Cook‚ a new MBA and special assistant in a training assignment with the company president‚ had just met with David Lyons‚ president of Lyons Document Storage Corporation. He had asked her to think about the possible consequences of repurchasing company bonds outstanding using cash that he felt could
Premium Interest Loan Debt
Lectures CHE883 ENVIRONMENT CHEMISTRY 15316::Pushp Lata Course Category Tutorials Practicals Credits Courses with numerical and conceptual focus 3.0 0.0 0.0 TextBooks Sr No Title Author T-1 Environmental Chemistry Edition Year Publisher Name Colin Baird‚ Michael Cann 4th 2008 W.H. Freeman and company Reference Books Sr No Title Author Edition Year Publisher Name R-1 Environmental Chemistry Gary W.vanLoon and Stephen
Premium Air pollution Greenhouse gas Chemistry
PNOY’s Ten Point Agenda in Basic Education 1. 12-year Basic Education Cycle (K+12) Our President is planning to expand the basic education cycle‚ from a 10-year cycle to a globally-comparable 12 years‚ for our public school children. At present‚ we are the only country in Asia that has a 10-year cycle for basic education. Those who can afford basic education get into the best universities and the best jobs after graduation. 2. Universal preschooling for all All public school children will
Premium High school Teacher Public school
Organic Chemistry Experiment - Hydrocarbons Thursday‚ April 12‚ 2007 1:34 PM Purpose: To Identify an unknown Hydrocarbon Procedure: Procedure listed in handout "Organic Chemistry Experiment -- Hydrocarbons" Hazards: Open flame and hydrocarbons are flammable. Equations: 1. . 3. . 4. . 5. . Unknown #: 1B s-6 Hyd-3 (colorless liquid) Data/Observations: Test Bromine addition Alkane Mixture of hexane and dichloromethane was originally clear liquid. After adding 3 drops red color Br2/CH2Cl
Premium Alkene Hydrocarbon Chemistry
CHEMICAL BONDS Chemical Bonds I. Introduction Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms called a chemical bond. The two extreme cases of chemical bonds are the covalent bonds and ionic bonds. Covalent bonds are bonds in which one or more pairs of electrons are shared by two atoms. Covalent bonds‚ in
Free Ionic bond Chemical bond Covalent bond