DO NOW!!! Top of Worksheet! Root canal: Calcium hydroxide is sometimes used in dentistry to temporarily fill the space left by a root canal. The equation for the formation of calcium hydroxide is below: 111 g/mol 40 g/mol 74 g/mol 58.5 g/mol

After today you will be able to… Convert between grams of a substance using the mole tunnel Safely navigate the mole tunnel

6 X Molar Mass! 0.50 mol 1.0 mol 1.0 mol 40 g 0.1 mol .2 mol 11.1 g 8.0 g 7.4 g 11.7 g

ONE HALF MOLE OF CALCIUM HYDROXIDE FOR EVERY MOLE OF NaOH How many moles of calcium hydroxide are formed for every mole of NaOH used? ONE HALF MOLE OF CALCIUM HYDROXIDE FOR EVERY MOLE OF NaOH

ONE MOLE OF NaCl FORMS FOR EVERY 0.50 MOLES OF NaCl FORMED For every 0.50 moles of Ca(OH)2 formed, how many moles of NaCl are formed? ONE MOLE OF NaCl FORMS FOR EVERY 0.50 MOLES OF NaCl FORMED

Why isn’t the number of grams of CaCl2 and Ca(OH)2 identical? The atoms in calcium chloride and calcium hydroxide have different masses! Therefore, their molar masses are different. A mole of one substance doesn’t weigh the same as a mole of the other substance; however, a mole of the first substance makes one mole of the second substance.

WELCOME TO THE MOLE TUNNEL… DOWN= DIVIDE UP= MULTIPLY

THE LAWS OF THE MOLE TUNNEL Only moles can talk to moles You must be BALANCED To enter tunnel you must go down, therefore you DIVIDE To exit tunnel you must go up, you MULTIPLY Grams, liters, and atoms CANNOT talk to each other

= 6 3 2 1 120 grams CaCl2 126.48 grams NaCl ÷ 111.0 g/mol X 58.5 g/mol 1.08 mol CaCl2 6 mol NaCl = 2.16 mol NaCl 3 mol CaCl2

 #1 How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?   ___NaOH + ____H2SO4  ____H2O + ____Na2SO4

Questions? Complete Worksheet! Reaction on

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