PROBLEM SOLVING: REPORT QUANTITIES IN THEIR PROPER SIGNIFICANT FIGURES. NO NEED TO TYPE UNITS IN YOUR ANSWER. DO NOT ROUND OFF IN BETWEEN CALCULATIONS. The %purity of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCI solution, and bubbling the resulting Co2(g) product in water that is at exactly 29 °C. After the a powdered crude sample reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. Write the balanced chemical equation of the reaction in your solutions sheet. What is the sum of all the coefficients of the balanced chemical equation? Answer: Determine the pressure of the trapped gas inside the eudiometer in mmHg. Answer: Determine the partial pressure of the collected CO2 in mm Hg. Answer: How many millimoles of CO2 was collected? Answer: What is the %purity of the sample to the nearest whole number (disregard the % symbol)? Answer:

PROBLEM SOLVING: REPORT QUANTITIES IN THEIR PROPER SIGNIFICANT FIGURES. NO NEED TO TYPE UNITS IN YOUR ANSWER. DO NOT ROUND OFF IN BETWEEN CALCULATIONS. The %purity of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCI solution, and bubbling the resulting Co2(g) product in water that is at exactly 29 °C. After the a powdered crude sample reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. Write the balanced chemical equation of the reaction in your solutions sheet. What is the sum of all the coefficients of the balanced chemical equation? Answer: Determine the pressure of the trapped gas inside the eudiometer in mmHg. Answer: Determine the partial pressure of the collected CO2 in mm Hg. Answer: How many millimoles of CO2 was collected? Answer: What is the %purity of the sample to the nearest whole number (disregard the % symbol)? Answer:

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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1. Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. Cu₂SO (aq) + Na₂PO₂(aq) → 2. 3. Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. Ba(CIO)₂(aq) + RbOH(aq) → Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. ZnCl₂(aq) + Hg₂(NO³)₂(aq) —
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Solve the following problems and attach your solutions in PDF. Make sure to box or encircle your final answer. 1. What volume of H20, weighed in air against brass weights, would have to be placed in a flask at 27°C, so that the flask may be marked to contain 1.0000 L at 20.0°C? 2. A 290.5 mg sample containing only Pb3O4and inert matter gives a precipitate of PbSO4 weighing 381.9 mg. What is the purity of the sample?
What is the minimum concentration of Ca2+ (M or mol/L) required to form a precipitate with a 0.025 M Na3PO4 solution? (Ksp for Ca3(PO4)2 is 1.0 × 10-26) Enter your answer as scientific notation with the correct number of sig figs, without any units. Use the format #e#
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The chemical method of analysis in determination of the blood alcohol content (%BAC) is: K2Cr2O7 + H2SO4 + C2H5OH → Cr2(SO4)3 + K2SO4 + CH3COOH + H2O What are the stoichiometric coefficients for the reaction above? (please enter the coefficients without spaces and with a coma between the numbers, e.g. 1,2,3,4) 2,8,3,2,2,3,11 During a Breathalyzer Test it was determined that 1.75mg of K2Cr2O7 was consumed by the above reaction. Calculate the number of milligrams of ethanol in the test sample. 0.411 Calculate the Blood Alcohol Content in this sample (%BAC).
I need the last part. Activity coefficients can be found in the other picture.
You begin the reaction with 6.5 mL of t-butyl alcohol (density= 0.775 grams/mL) and 15 mL of concentrated HCl (1.189 grams/mL, 38% HCl) in a distillation flask. Calculate the limiting reagent and the theroretical yield of the product (t-butyl chloride) for this reaction. (Hint:Your starting amount of HCl is 38% of the starting smount).