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Unformatted text preview: other isotope? 108.9049 amu 3. Molecular weight and Stoichiometry calculations . a. Saccharin an artificial sweetener which has the composition 45.90 % C , 2.75 % H , 26.20% O, 17.50 % S and 7.65 % N. What is the empirical formula for saccharin? C 7 H 5 O 3 SN b. A gaseous mixture containing 4.15 mol of Hydrogen gas and 7.13 mol of Oxygen react to form steam (H 2 O). i) Write a balanced equation? ii) What is the limiting reagent? Hydrogen iii) What is the theoretical yield? 74.7 g H 2 O iv) How many moles of excess reagent remain unreacted? 5.06 moles O 2 c. Aluminum reacts with sulfur to form aluminum sulfide (Al 2 S 3 ). Initially 1.18 mol of Aluminum and 2.25 mol of sulfur are combined. i) Write a balanced equation? ii) What is the limiting reagent? Al iii) What is the theoretical yield? 88.7 g Al 2 S 3 iv) How many moles of excess reagent remain unreacted? 0.48 moles S...
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