Stoichiometry

You already know... In a balanced equation the coefficients are MOLES. 2H 2 + O 2 -> 2H 2 O 2 moles Hydrogen, 1 mole Oxygen, 2 moles H 2 O How to Calculate Molar Mass: H 2 O = H 2 x 1.01 = 2.02 O 1 x 16.00 = 16.00 18.02 g/mol 1 mole of anything is 22.42 L examples: 1 mole water = 22.42 L 1 mole H 2 SO 4 = 22.42 L 1 mole acetic acid = 22.42 L

Before the Math ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Math ,[object Object],[object Object],[object Object],[object Object]

Finding Moles (this is going to be the first step in all the other types of problems) ,[object Object],[object Object],[object Object],[object Object],= .67 mol O 2 1.34 mol H 2 O 2 (from the problem) 1 mol O 2 (from equation) 2 mol H 2 O 2 (from equation)

Finding Liters ,[object Object],[object Object],[object Object],[object Object],= 4.8 L H 2 O 2 2.4 L O 2 1 mol O 2 2 mol H 2 O 2 22.42 L H 2 O 2 22.42 L O 2 1 mol O 2 1 mol H 2 O 2

Finding Grams ,[object Object],[object Object],[object Object],[object Object],[object Object],= 7.02 g H 2 O 2 3.7 g H 2 O 1 mol H 2 O 2 mol H 2 O 2 34.02 g H 2 O 2 18.02 g H 2 O 2 mol H 2 O 1 mol H 2 O 2

Grams to Liters? The mole allows for any calculation. ,[object Object],[object Object],[object Object],= 1.87 L H 2 O 2 1.5 g H 2 O 1 mol H 2 O 2 mol H 2 O 2 22.42 L H 2 O 2 18.02 g H 2 O 2 mol H 2 O 1 mol H 2 O 2

Stoichiometry

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Stoichiometry