PPT-Moles & Stoichiometry

By Skye Smith What is Mass Mass can be defined as a quantitative measure of an objects resistance to the change of its speed Scientifically speaking mass IS different than weight which is the measure of a planets gravitational force on an object. Stoichiometry. Quantitative Chemistry. Definitions. Stoichiometry. (. stoy. -. kee. -ah'-mi- tree) n.  . 1.The determination of proportions in which chemicals combine and weight relationships in chemical reactions.. and Stoichiometry. Mole Ratio. Recall:. The coefficients . of a balanced chemical equation give the mole ratio of one chemical . to another. We can use these numbers to predict the number of moles of product produced. 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 . 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. 5/22 DO NOW. 1. . Out of the following topics, list the top 3 you struggle with the most. - Calculating Molar Mass. - Balancing Reactions. - Converting from Mass to Moles. - Converting from Moles to Mass. 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,. The Arithmetic of Equations. Section 1. Section 1 Learning Targets. 12.1.1 – I can explain how balanced equations apply to both chemistry and everyday life.. 12.1.2 – I can interpret balanced chemical equations in terms of moles, representative particles, mass, and gas volume at STP.. Using ratios of balanced reactions to manipulate the chemical variables in these reactions. Calculators, reference tables, notes.. Get your thinking caps on!. For every single chemical reaction that’s balanced, we can determine the . Chocolate Chip Cookies. Cookie Recipe . 1.5 c sugar. 1 c. butter. 3 eggs. 2.25 c. flour . 2 c. chocolate chips . makes 25 cookies. Using the following recipe, complete the questions. . . If you have 6 c. of sugar, how many eggs will you need to use all of it?. Roles:. Player 1. : . set up problem and work through first conversion factor. Player 2. : . work through second conversion factor (if there is one). Player 3. : . work through third conversion factor (if there is one). 2. .. 2.) How many moles are there in 63.2g of Cl. 2. ?. 60.4L O. 2. . 22.4L O. 2. . 1 mol O. 2. . = 2.7 mol O. 2. 63.2g Cl. 2. 70g Cl. 2. 1mol Cl. 2. = 0.903mol Cl. 2. Ch. . 9. Math In Chemistry. 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 A Study in Scarlet. “In solving a problem of this sort, the grand thing is to be able to reason backward. This is a very useful accomplishment, and a very easy one, but people do not practice it much.”. 2017 . P3 Challenge – . Determine the . number of Mg atoms in 0.35 g of . MgO. .. Today’s Objective –. Stoichiometry. Assignment: . Stoichiometry Worksheet. Agenda. Hmk. . Review. Moles and Reactions.