combined antacid lab

How many milligrams of calcium carbonate does one dose contain? If none, enter 0. (prelab #2)

How many moles of calcium carbonate is that? If none, enter 0. (prelab #3)

How many milligrams of magnesium hydroxide does one dose contain? If none, enter 0. (prelab #2)

How many moles of magnesium hydroxide is that? If none, enter 0. (prelab #3)

How many TOTAL moles of HCl are theoretically needed to neutralize ALL active ingredients in one dose? (prelab #5)

How many mL of 0.50 M HCl would contain that many moles? (prelab #6)

"Middle" HCl used, in mL (Analysis #1)

"High" HCl used, in mL (Analysis #1)

"Low" HCl used, in mL (Analysis #1)

Average volume of HCl used (Analysis #2)

Moles of HCl actually used (Analysis #3)

Percent yield (actual moles HCl ÷ theoretical moles HCl)

]]> 12.0000000 0.3333333 0 mg_calcium_carbonate,mol_calcium_carbonate,mg_magnesium_hydroxide,mol_magnesium_hydroxide,theo_mol_HCl,theo_mL_HCl,middle_HCl,high_HCl,low_HCl,average,actual_mol_HCl,percentyield mg_calcium_carbonate=[0;1000] mg_magnesium_hydroxide=[0;200] mol_calcium_carbonate = [((mg_calcium_carbonate/100090)-2E-5);((mg_calcium_carbonate/100090)+2E-5)] mol_magnesium_hydroxide = [((mg_magnesium_hydroxide/58319)-2E-5);((mg_magnesium_hydroxide/58319)+2E-5)] theo_mol_HCl = [((2*(mol_calcium_carbonate+mol_magnesium_hydroxide))-5E-5);((2*(mol_calcium_carbonate+mol_magnesium_hydroxide))+5E-5)] theo_mL_HCl = [(theo_mol_HCl/.00052);(theo_mol_HCl/.00048)] middle_HCl = [(theo_mL_HCl-(theo_mL_HCl*.05));(theo_mL_HCl+(theo_mL_HCl*.05))] high_HCl = [middle_HCl-1;middle_HCl+1] low_HCl = [middle_HCl-1;middle_HCl+1] average = [(middle_HCl+high_HCl+low_HCl)/3.1;(middle_HCl+high_HCl+low_HCl)/2.9] actual_mol_HCl = [(average*.0005)-.0002;(average*.0005)+.0002] percentyield = [(actual_mol_HCl*100/theo_mol_HCl)-1;(actual_mol_HCl*100/theo_mol_HCl)+1] Mass of CaCO₃ looks reasonable|Did you enter your mass of active ingredient in milligrams? Mass of Mg(OH)₂ looks reasonable|Did you enter your mass of active ingredient in milligrams? You correctly converted g to mol CaCO₃ correctly|You made a mistake converting g to mol for calcium carbonate. Did you use the correct molar mass? Did you convert mg to g? Did you set up your fishbone correctly? You correctly converted g to mol Mg(OH)₂ correctly|You made a mistake converting g to mol for magnesium hydroxide. Did you use the correct molar mass? Did you convert mg to g? Did you set up your fishbone correctly? You correctly determined the mol of HCl needed to neutralize|You didn't calculate moles HCl necessary to neutralize your active ingredient correctly. Do you have a correct balanced equation? Did you use the right formula for all reactants and products? You correctly converted moles of HCl to milliliters|Check your conversion to milliliters. Did you rearrange M = mol/L to get L by itself? Did you convert your answer to mL? Remember 1 L = 1000 mL Your measurements seem accurate|Your measurements do not look very accurate Good, you made some precise measurements|Some of your measurements were not very precise Good, you made some precise measurements|Some of your measurements were not very precise You calculated the average correctly|Looks like you made a mistake calculating the average volume. Did you add up your 3 closest volumes and divide by 3? You calculated the actual moles of HCl correctly|You made a mistake calculating actual moles of HCl used. Did you start with your average mL of HCl? Did you convert it to liters? Did you use the molarity formula M = mol/L? You calculated percent yield correctly|You made a mistake on your percent yield calculation. Did you do actual ÷ theoretical? Did you multiply by 100 to convert to a percentage? 0 0 1