proportional relationships i have 5 eggs. how many cookies can i make? 3/4 c. brown sugar 1 tsp...
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![Page 1: Proportional Relationships I have 5 eggs. How many cookies can I make? 3/4 c. brown sugar 1 tsp vanilla extract 2 eggs 2 c. chocolate chips Makes 5 dozen](https://reader036.vdocuments.mx/reader036/viewer/2022082820/56649e915503460f94b9707d/html5/thumbnails/1.jpg)
Proportional Relationships
• I have 5 eggs. How many cookies can I make?
3/4 c. brown sugar1 tsp vanilla extract2 eggs2 c. chocolate chipsMakes 5 dozen cookies.
2 1/4 c. flour1 tsp. baking soda1 tsp. salt1 c. butter3/4 c. sugar
5 eggs 5 doz.
2 eggs= 12.5 dozen cookies
Ratio of eggs to cookies
Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem
![Page 2: Proportional Relationships I have 5 eggs. How many cookies can I make? 3/4 c. brown sugar 1 tsp vanilla extract 2 eggs 2 c. chocolate chips Makes 5 dozen](https://reader036.vdocuments.mx/reader036/viewer/2022082820/56649e915503460f94b9707d/html5/thumbnails/2.jpg)
Proportional Relationships
• StoichiometryStoichiometry– mass relationships between substances in a chemical
reaction– based on the mole ratio
• Mole RatioMole Ratio– indicated by coefficients in a balanced equation
2 Mg + O2 Mg + O22 2 MgO 2 MgOCourtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem
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Stoichiometry Steps1. Write a balanced equation.2. Identify known & unknown.3. Line up conversion factors.
– Mole ratio - moles moles– Molar mass - moles grams– Molarity - moles liters soln– Molar volume - moles liters gas
Core step in all stoichiometry problems!!
– Mole ratio - moles moles
4. Check answer.Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem
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1 mol of a gas=22.4 Lat STP
Molar Volume at STP
Standard Temperature & Pressure0°C and 1 atm
Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem
![Page 5: Proportional Relationships I have 5 eggs. How many cookies can I make? 3/4 c. brown sugar 1 tsp vanilla extract 2 eggs 2 c. chocolate chips Makes 5 dozen](https://reader036.vdocuments.mx/reader036/viewer/2022082820/56649e915503460f94b9707d/html5/thumbnails/5.jpg)
Molar Volume at STP
Molar Mass(g/mol)
6.02 1023
particles/mol
MASSIN
GRAMSMOLES
NUMBEROF
PARTICLES
LITERSOF
SOLUTION
Molar Volume (22.4 L/mol)
LITERSOF GASAT STP
Molarity (mol/L)
Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem