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Stoichiometric Calculations: Egg to Cookie Ratio

Learn about stoichiometry and proportional relationships in chemical reactions. Calculate the number of cookies you can make from a given number of eggs in a baking recipe. Understand molar ratios and conversion factors in stoichiometry. Find out how to determine molar volume at standard temperature and pressure (STP).

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Stoichiometric Calculations: Egg to Cookie Ratio

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  1. Stoichiometry Stoichiometric Calculations

  2. A. Proportional Relationships Ratio of eggs to cookies • I have 5 eggs. How many cookies can I make? 2 1/4 c. flour 1 tsp. baking soda 1 tsp. salt 1 c. butter 3/4 c. sugar 3/4 c. brown sugar 1 tsp vanilla extract 2 eggs 2 c. chocolate chips Makes 5 dozen cookies. 5 eggs 5 doz. 2 eggs = 12.5 dozen cookies

  3. A. Proportional Relationships • Stoichiometry • mass relationships between substances in a chemical reaction • based on the mole ratio • Mole Ratio • indicated by coefficients in a balanced equation 2 Mg + O2 2 MgO

  4. B. Stoichiometry Steps 1. Write a balanced equation. 2. Identify known & unknown. 3. Line up conversion factors. • Given • Molar Mass or MOLE RATIO • Molarity—moles of solute/1 L solution • Molar volume---22.4 L/1 mole • Calculate

  5. C. Molar Volume at STP StandardTemperature&Pressure 0°C and 1 atm 1 mol of a gas=22.4 L at STP

  6. C. Molar Volume at STP LITERS OF GAS AT STP Molar Volume (22.4 L/mol) MASS IN GRAMS NUMBER OF PARTICLES MOLES Molar Mass (g/mol) 6.02  1023 particles/mol Molarity (mol/L) LITERS OF SOLUTION

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