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Lecture 10 Notes

# Lecture 10 Notes - o Pancakes 1 cup flour 2 eggs ½ tsp...

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Lecture 10 Notes Stoichiometry: o Numerical relationship between chemical quantities in a balanced chemical reaction Balancing equations: o A balanced equation can be used in moles for conversion—allowing you to find the mass of parts Example: 2Na(s) + Cl 2 (g) 2NaCl (s) 3.4 mol Cl 2 Mol Cl 2 mol NaCl . * = = . 3 4 mol Cl21 2 mol NaCl1 mol Cl2 mol NaCl 6 8 mol NaCl Example: Al 2 O 3 (s) + H 2 SO 4 (aq) Al 2 (SO 4 ) 3 (aq) + H 2 O Al 2 O 3 (s) + 3H 2 SO 4 (aq) Al 2 (SO 4 ) 3 (aq) + 3H 2 O . * ) = . 2 67 mol H2SO41 1 mol Al2SO4 33 mol H2SO4 89 mol ( ) Al2 SO4 3 . ) * = ( ) 0 89 mol Al2SO4 31 330 gmol 305g Al2 SO4 3

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Unformatted text preview: o Pancakes 1 cup flour + 2 eggs + ½ tsp baking powder 5 pancakes o Suppose you have 3 cup flour, 10 eggs, 4 tsp baking powder: * = 3 cup flour1 5pancakes1 cup flower 15 pancakes * = 10 eggs1 5 pancakes2 eggs 25 pancakes . * . = 4 tsp baking powder1 5 pancakes12 tsp baking powder 40 pancakes In this example flour is the limiting reactant because there is not enough flower to make more than 15 pancakes no matter how much of any other ingredient you have. 15 pancakes is the maximum yield....
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Lecture 10 Notes - o Pancakes 1 cup flour 2 eggs ½ tsp...

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