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alculations of Unknown % artial Pressure of CO2 (mmHg) ortial Pressure of CO2 (atm) oles of CO2 loles of NaCO3 lass of NaCO3 grams of NaCO3 verage % of NaCO3 TD 756.2 756.2

alculations of Unknown % artial Pressure of CO2 (mmHg) ortial Pressure of CO2 (atm) oles of CO2 loles of NaCO3 lass of NaCO3 grams of NaCO3 verage % of NaCO3 TD 756.2 756.2

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Hi I am having trouble finding the rest of the data for the blank excel boxes. The given date will be on the right side of the excel photo, I just need to find the answers for the excel table on the left. I have also attached the formulas needed to find them. Thank you.

13 Trial 1 Trial 2 Unknown Number Trial 1 Trial 2 Mass of Unknown before Rxn (g) Initial Volume in Graduated Cyl (mL) Final Volume in Graduated Cyl (mL) Change in Volume CO3 (mL) Temp of CO2 Celsius Pressure of Lab (mmHg) Vap Press H20 14 Calculations of Unknown % 1.03 1.009 15 Partial Pressure of CO2 (mmHg) 756.2 756.2 203 200 Partial Pressure of CO2 (atm) Moles of CO2 Moles of NaCO3 Mass of NaCO3 grams 16 340 333 17 18 24 24 19 761.1 761.1 % of NaCO3 20 4.9 21 Average % of NaCO3 22 STD 23 24 25
Transcribed Image Text:13 Trial 1 Trial 2 Unknown Number Trial 1 Trial 2 Mass of Unknown before Rxn (g) Initial Volume in Graduated Cyl (mL) Final Volume in Graduated Cyl (mL) Change in Volume CO3 (mL) Temp of CO2 Celsius Pressure of Lab (mmHg) Vap Press H20 14 Calculations of Unknown % 1.03 1.009 15 Partial Pressure of CO2 (mmHg) 756.2 756.2 203 200 Partial Pressure of CO2 (atm) Moles of CO2 Moles of NaCO3 Mass of NaCO3 grams 16 340 333 17 18 24 24 19 761.1 761.1 % of NaCO3 20 4.9 21 Average % of NaCO3 22 STD 23 24 25
Equation 8 can be easily rearranged to solve for Pco,: Pco, = Piab – PH,0 (9) and notice that Pco, = PH, from equation 3. Molar Volume – Background В-2 Once the partial pressure of CO2 is known, it can be related to the moles of CO2(g) produced via the ideal gas law. Pco, x Vco, n co, Rx Tjab (10) The moles of CO2 produced can then be converted to the grams of sodium carbonate in the unknown. 1 mole Na,CO, 105.97 g mass Na¸CO, = nco, × (11) 1 mole CO, 1 mole Na,CO, The mass percent of Na2CO3 in your unknown can then be calculated with equation 12. mass Na,CO, mass % Na ,CO, ×100 (12) 12 total unknown mass From your data for each of the two trials performed, calculate the mass percent of Na,CO3 in your unknown. Show all calculations and, as always, pay special attention to the significant figures which result from your measurements. Calculate the average mass percent of Na2CO3 in your unknown.
Transcribed Image Text:Equation 8 can be easily rearranged to solve for Pco,: Pco, = Piab – PH,0 (9) and notice that Pco, = PH, from equation 3. Molar Volume – Background В-2 Once the partial pressure of CO2 is known, it can be related to the moles of CO2(g) produced via the ideal gas law. Pco, x Vco, n co, Rx Tjab (10) The moles of CO2 produced can then be converted to the grams of sodium carbonate in the unknown. 1 mole Na,CO, 105.97 g mass Na¸CO, = nco, × (11) 1 mole CO, 1 mole Na,CO, The mass percent of Na2CO3 in your unknown can then be calculated with equation 12. mass Na,CO, mass % Na ,CO, ×100 (12) 12 total unknown mass From your data for each of the two trials performed, calculate the mass percent of Na,CO3 in your unknown. Show all calculations and, as always, pay special attention to the significant figures which result from your measurements. Calculate the average mass percent of Na2CO3 in your unknown.
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