* Chemical Formulas and Reactions . . . Midterm Objectives: * To balance chemical equations. * To interpret chemical reactions. * To understand equilibrium reactions and the factors that can affect them. * Molecular Mass / Formula Mass * Is the sum of the atomic masses of all the atoms present in one molecule of that compound. Example: the molecular mass of sodium bromide‚ NaBr‚ is 103‚ which represents the sum of the atomic mass of sodium (23) plus that of bromide (80)
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Chemical Description Chemical Description Chemical #1 Seashell Calcium Carbonate - CaO3 Density | * 2.71 g/cm3 (calcite) * 2.83 g/cm3 (aragonite) | Exact mass | * 100.0869 g/mol | Molecular Formula | * CaO3 | Melting point | * 825 °C (calcite) * 1339 °C (aragonite) | Boiling point | * Decomposes | Acidity | * 9.0 | Flash point | * Non flammable | Crystal structure | * Trigonal | Other names | * Limestone‚ Marble‚ Chalk‚ Calcite and
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Hair has historically been a crucial part of a Black Woman’s identity. Hair has always been the chosen medium to “display culture‚ beauty and spirituality” (Chapman‚ 2007). This pride was no more identifiable than in the 1960’s and 1970’s during a new movement Black hair movement. Black Women began wearing their hair in its natural state as a symbol of “political change‚ Black self-love‚ intellectual historical knowledge‚ and Black Power” (Johnson‚ Bankhead‚ 2013). “Natural hair” for the purposes
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Chemical Equation Chemical Reaction: C10H8+ 12 O2 → CO2 + 4H2 O (Naphthalene) Combustion Introduction of the Product: Naphthalene is an organic compound with formula C10H8. It is the simplest polycyclic aromatic hydrocarbon‚ and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromatic hydrocarbon‚ naphthalene’s structure consists of a fused pair of benzene rings. It is best known as the
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using physical and chemical properties. Physical properties are characteristics of a substance. Two types of physical properties are quantitative and qualitative. Quantitative is a property that has an amount or can be measured such as hardness‚ solubility‚ and viscosity. Qualitative is a physical description of matter such as color‚ clarity‚ and state. Chemical properties are characteristics of a substance which allows it to behave in a specific manner. A few types of chemical properties are combustibility
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Tro’s Chemistry Chapter 13 – Chemical Kinetics Page 1 of 13 Acknowledgements: Many of the images are adopted from Tro’s textbook‚ the only purpose of which is to enhance student learning. Key terms‚ concepts‚ skills: Refer to pp 599 – 601. Review questions: 3 – 24. Suggested problems: 25‚ 27‚ 33‚ 39‚ 43‚ 53‚ 57‚ 59‚ 69‚ 73‚ 75‚ 81‚ 93‚ 103. 13.1 & 2 Introduction to the Rate of a Chemical Reaction • kinetics is the study of the factors that affect the speed of a reaction and the mechanism by
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Department of Chemistry Physical and Chemical Properties Submitted by Date Submitted: February 2‚ 2014 Date Performed: January 31‚ 2014 Lab Section: Chem-180 Course Instructor: Professor Spenser Purpose The purpose of this lab experiment is to observe physical and chemical properties of substances which
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Dictionary of chemical formulas From Wikipedia‚ the free encyclopedia This is a list of chemical compounds with chemical formulas and CAS numbers‚ indexed by formula. This complements alternative listings to be found at list of inorganic compounds‚ list of organic compounds and inorganic compounds by element. Table of contents: A B C Ca-Cu D E F G H I K L M N O P R S T U V W X Y Z & [edit] Tables to be merged Inorganic: A B Ca-Cu G H I L M N O P S Organic: C C2 C3 C4 C5 C6 C7
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GODFREY OKOYE UNIVERSITY ENUGU UGWOMU-NIKE‚ PMB 01014 ENUGU‚ ENUGU STATE A PROJECT PAPER ON “BARBERING / HAIR CUT” PRESENTED BY: BARBERING & PRINTING GROUP COURSE CODE: GST 206 COURSE: ENTREPRENEURSHIP STUDY DATE: 27/7/2012 LECTURERS: PRO. NWANDIALOR AND MRS. MOUNANU TABLE OF CONTENT Report ……………………………………………………………..3 Members ………………………………………………………….4 History of barbering……………………………………………….5 Basic tools for barbering…………………………………………..6 Uses of barbering tools………………………………………...7-10 How
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company manufactures and sells Hair Care products. Vstron waterproof hair gel is our new product‚ and it is a revolution and development of hair gel and its functions. Vstron waterproof hair gel provides a natural and strong hold on all kinds of hair styles‚ and most importantly‚ it is waterproofed. By using Vstron waterproof hair gel‚ consumers will no longer worry about their messy looks after they get wet. Our philosophy is: high-quality‚ natural and good-looking hair style. The strengths of our
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