Lab Report: Stoichiometry Lab Oct. 27‚ 2011 Claire Elizabeth Lab Partners: Hannah Signature:___________________ Introduction- Baking soda and vinegar are two common materials found in almost every household. That‚ plus the fact that all the starting and finishing materials are non hazardous and safe‚ is why this is one of the first chemical reactions that many people are exposed to The purpose of this experiment tests which of the two reactants (vinegar and baking soda) is the limited
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Mass Percent & Empirical and Molecular Formulas Unit 2 Lecture 3 Mass Percent The percentage by mass of an element in a compound or a component in a substance Mass % element = (# of atoms) (element’s atomic mass) x100 formula weight of compound Mass % component= ( mass of component ) x100 total mass of substance A component could be a compound or an element in a substance or mixture (for example‚ water in a hydrate). Example 1: 1. What is the mass percent of each element in Ilmenite (FeTiO3)
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Humans should consider every possibility that science makes in order for it to happen and work properly in the society. One is human cloning. But first let’s define cloning. Cloning is the artificial process of making a genetic twin of a person or an animal. In short‚ you replicate the genes of a being in order to create another being of the same kind. And you know Dolly‚ the sheep? Dolly was the first animal to be cloned. And since her birth‚ the idea of human cloning has been given emphasis. People
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Chemistry102 5/7/2013 Lecture Presentation Chapter 17 Additional Aspects of Aqueous Equilibria John D. Bookstaver St. Charles Community College Cottleville‚ MO © 2012 Pearson Education‚ Inc. Common Ion Effect HA(aq) + H2O(l) ⇔ A−(aq) + H3O+(aq) • Adding a salt containing the anion NaA‚ which • is the conjugate base of the acid (the common ion)‚ shifts the position of equilibrium to the left This causes the pH to be higher than the pH of the acid solution 9lowering the H3O+ ion concentration
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course are too numerous to be listed here. The course goes hand in hand with General Chemistry lecture course‚ which covers the following topics: 1. CHEMISTS AND CHEMISTRY. 2. ATOMS‚ MOLECULES AND IONS. 3. STOICHIOMETRY. 4. TYPES OF CHEMICAL REACTIONS AND SOLUTION STOICHIOMETRY. 5. GASES. 6. ENERGY‚ ENTHALPY‚ AND THERMOCHEMISTRY. 7. QUANTUM MECHANICS AND ATOMIC THEORY. 8. BONDING: GENERAL CONCEPTS.
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Unit 4: Basic Stoichiometry Rocky Mountain Poison and Drug Center Case Study DUE _________________________________ at Midnight All Sections are a level 3 Title and Date Is it present Identifies the independent and dependent variables. Describes the independent and dependent variables. Problem (level 3) Complete sentence (if a problem‚ in question form) Identifies the independent and dependent variables. Describes the independent and dependent variables. Case
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Single Replacement -these can be cationic or anionic. i.e. Cationic: A+BC-->AC+B Anionic: A+BC-->AB+C B) Double Replacement -AB+CD-->AD+CB C) Composition/Synthesis -A+B-->AB D) Combustion -C(x)+H(y)+O(2)-->CO(2)+H(2)O Part III: Stoichiometry A) All conversions using the mole‚ including GFM. -Mole (Avogadro’s #) = 6.02 x 10^23 QUANTITY MOLE MASS GFM: Number on periodic table. B) Conversions using 1 mole = 22.4L (self explanatory) C) Conversions i.e. 2Bread + 3PeanutButter
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Introduction to Chemistry Laboratory: A Lesson on Tools‚ Techniques and Measurements PURPOSE: The purpose of this set of experiments (3 total) is to become familiar with the common types of laboratory glassware and equipment‚ and how to obtain and analyze data from these items. LEARNING OBJECTIVES: By the end of this experiment‚ the student should be able to demonstrate the following proficiencies: 1. Know which glassware (beakers‚ burettes‚ pipettes‚ graduated cylinders‚ flasks‚ etc) should
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Chapter 13: EDTA titrations Complexation Reaction: A reaction between two species having a well-defined stoichiometry. The resulting bond is not permanent from a covalent standpoint. Complex: The resulting structure formed during a complexation reaction. Coordination Center: Metal ion in a complex (Lewis acid) Ligand: The species that complexes the metal center. A single species can form one or more bonds with a single coordination center (Lewis base) Coordination Number: Number of ligand bonds
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molar mass is 2 g/mol. Three 1000 moles of N2 = 3000 moles of H2 are required. The mass of H2 that is formally needed is equal to 3000 moles‚ 2 g/mol‚ or 6000 g (6 kg). Now considering the amount of NH3 produced per batch‚ based on the ratio of stoichiometry‚ 2 moles of NH3 are produced from 1 mole of N2. As a result‚ 1000 moles of N2 will result in two 1000 = 2000 moles of NH3. Since NH3 has a molar mass of 17 g/mol‚ the mass of NH3 generated is equal to 2000 moles‚ 17 g/mol‚ or 34 000
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