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Name: _______________________________________ Period: ______ Date: ________ H2O Step 1: Find the mass of each element in the formula using the periodic table. H= Step 2: Find the number of atoms of each element in the chemical formula H= Step 3: Multiply the mass times the number of atoms to get the total mass from each element. H= X = O= O= O= Step 2: Find the number of atoms of each element in the chemical formula Step 3: Multiply the mass times the number of atoms to get the total mass from each element. = X = X Step 4: Add all the individual masses to find the mass of the whole chemical. H2O = = C12H22O11 Step 1: Find the mass of each element in the formula using the periodic table. = = = = = X = = = = X = Step 4: Add all the individual masses to find the mass of the whole chemical. = NaCl Step 1: Find the mass of each element in the formula using the periodic table. = = Step 2: Find the number of atoms of each element in the chemical formula = = Step 3: Multiply the mass times the number of atoms to get the total mass from each element. = X = = X Step 4: Add all the individual masses to find the mass of the whole chemical. = = NaHCO3 Step 1: Find the mass of each element in the formula using the periodic table. = Step 2: Find the number of atoms of each element in the chemical formula = Step 3: Multiply the mass times the number of atoms to get the total mass from each element. = X = = = = X = = = = X = = = = X = Step 4: Add all the individual masses to find the mass of the whole chemical. = Al2(SO4)3 Step 1: Find the mass of each element in the formula using the periodic table. Step 2: Find the number of atoms of each element in the chemical formula Step 3: Multiply the mass times the number of atoms to get the total mass from each element. Step 4: Add all the individual masses to find the mass of the whole chemical. 1. How many molecules are in 13.5 g of sulfur dioxide, SO2? 2. What is the mass of 2.23 x 1023 atoms of sulfur? 3. How many formula units of silver fluoride, AgF, are equal to 42.15 g of this substance? 4. What is the mass of 8.83 x 1023 formula units of Iron (III) oxide, Fe2O3?