PDF-Solution Stoichiometry

1 Aqueous SolutionsWater is the dissolving Some Properties of WaterWater is. 6x + 3 = 5x + 7. 6x + 3 = 6x + 7. 6x + 3 = 6x + 3. One Solution. , No Solution, and Infinitely Many Solutions. 6x . + 3 = 5x + . 7. Things to notice about one solution equations:. Notice that there are a different quantity of x’s on each side of the equation.. and . Thermochemical. . Reactions. the energy of a reaction is directly related to the quantity of products. if 28.4 kJ of energy is required to melt 1 mol of . NaCl. at its melting point then it would require twice that amount (56.8 kJ) to melt 2 mol of . If a . VOLUME. is mentioned, and the problem involves molarity DO . NOT. assume that 22.4L should be used. STP is only used when it says STP in the question and the substance is a GAS!. IMPORTANT!. Lecture 3 Topics. . Brown. , chapter 3. 1. Moles. . . 3.4. Molecular mass (aka . molecular . weight) . . 3.3. 2. Molar . converstions. Percent composition . 3.3. Empirical formulas . symbolic representation of a chemical reaction that shows:. reactants. on left side of reaction. products. on right side of equation. relative amounts of each with . stoichiometric. . coefficients. Halvor M. Halvorson. 1. , Chris L. Fuller. 2. , Sally A. Entrekin. 3. , J. Thad Scott. 4. , and Michelle A. Evans-White. 1. 1. University of Arkansas Department of Biological Sciences. 2. University of Central Arkansas Department of Biology. 6. 3-. (. aq. ) + JO. 2. -. (. aq. ) .  J. 2. O. 7. 2-. (. aq. ) + Z. 7. O. 4. 3+. (. aq. ) . 68H. +. (. aq. ) + . 41e. -. +7 . Z. 2. O. 6. 3-. (. aq. ) .  2Z. 7. O. 4. 3+. (. aq. ) + 34. H. 2. Step-by-Step Mass to Mole. What is Stoichiometry. Stoichiometry is the study of the relationships or ratios between two or more substances undergoing a physical or chemical change. We will be taking steps to solve the different equations. It’s a process that allows us to mathematically convert and calculate the relationships between the amount of reactants and products in a chemical reaction.. Graphical representation . Example: . for every O2 molecule,. Guiding Questions. How are dosages determined? . How are toxins measured and controlled?. . Which is better: eating beans and rice at separate meals . or together?. . Table of Contents. ‘Stoichiometry’. wwwmojesnetUnderstanding of Macroscopic Microscopic and Symbolic Representations Among Form Four Students in Solving Stoichiometric Problems Kamariah Binti Sujak 1 Esther Gnanamalar Sarojini Daniel 2 Concept 1 2¥ One mole of NaCl contains 6.022 x 10 NaCl formula units.¥ Use the mole quantity¥x23 ¥ The mass of an atom in amu¥; .g/amu = 1.674 x10-24 gMass of 1 mole of H atoms: 1.674 x10-24H Writing and balancing Chemical Equation. Classifying Chemical Reactions:. Precipitation Reactions. Acid-base Reactions. Decomposition Reactions (nonredox). Oxidation-Reduction Reactions. Reaction Stoichiometry. 1. Identify the species present in the combined solution, and determine what reaction occurs..  2. Write the balanced net ionic equation for the reaction..  3. Calculate the moles of reactants..  4. Determine which reactant is limiting..