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How much moles of precipitate was formed? * Probable atomic weights: Ca = 40; C = 12; 0 = 16 Your answer How many moles of calcium are in calcium oxalate? * Your answer * What is the mass (g) of calcium ions in the sample? * Your answer What is the percentage of calcium in the original limestone sample? * Use the COMPLETE computed value for E to compute for the percentage.

How much moles of precipitate was formed? * Probable atomic weights: Ca = 40; C = 12; 0 = 16 Your answer How many moles of calcium are in calcium oxalate? * Your answer * What is the mass (g) of calcium ions in the sample? * Your answer What is the percentage of calcium in the original limestone sample? * Use the COMPLETE computed value for E to compute for the percentage.

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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A 2.89 g sample of limestone (CaCO3) was dissolved in 0.12M (HCI) solution according to the following equation: CaCO3 (s) + 2HCI (aq) → Ca²+ (aq) + 2Cl(aq) + CO2(g) + H₂O(1) Excess 0.1M (NH4)2C2O4(aq), was added to the resulting solution to precipitate the calcium ions as calcium oxalate, CaC₂O4(s). The precipitate was filtered, dried, and weighed at 1.75 g.
Transcribed Image Text:A 2.89 g sample of limestone (CaCO3) was dissolved in 0.12M (HCI) solution according to the following equation: CaCO3 (s) + 2HCI (aq) → Ca²+ (aq) + 2Cl(aq) + CO2(g) + H₂O(1) Excess 0.1M (NH4)2C2O4(aq), was added to the resulting solution to precipitate the calcium ions as calcium oxalate, CaC₂O4(s). The precipitate was filtered, dried, and weighed at 1.75 g.
How much moles of precipitate was formed? * Probable atomic weights: Ca = 40; C = 12; 0 = 16 Your answer How many moles of calcium are in calcium oxalate? * Your answer What is the mass (g) of calcium ions in the sample? * Your answer What is the percentage of calcium in the original limestone sample? * Use the COMPLETE computed value for E to compute for the percentage. Your answer
Transcribed Image Text:How much moles of precipitate was formed? * Probable atomic weights: Ca = 40; C = 12; 0 = 16 Your answer How many moles of calcium are in calcium oxalate? * Your answer What is the mass (g) of calcium ions in the sample? * Your answer What is the percentage of calcium in the original limestone sample? * Use the COMPLETE computed value for E to compute for the percentage. Your answer
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