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The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by gravimetry. The dolomite sample is dissolved in acid and the calcium ions (Ca2*) present are precipitated as calcium oxalate (CaC,O4) with MM: 128.1 g/mol. The calcium oxalate is filtered, dried and strongly heated to form calcium oxide (Cao) with Formula Mass (FM) = 56.1 g mol". In one analysis the mass of dolomite used was 3.72 g. The mass of calcium oxide formed was found to be 1.24 g. %3D Questions: 1. What is the chemical formula of the analyte in this problem? 2. What is precipitating agent? 3. Give the molecular formula of the precipitate measured in this problem. g. 4. What is the mass(g) of the analyte? Show your answer in correct no. of SF. 5. What is the % w/w of the analyte in the sample? Give the answer in correct answer of SF. 026.9 033.3 056 060.1

The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by gravimetry. The dolomite sample is dissolved in acid and the calcium ions (Ca2*) present are precipitated as calcium oxalate (CaC,O4) with MM: 128.1 g/mol. The calcium oxalate is filtered, dried and strongly heated to form calcium oxide (Cao) with Formula Mass (FM) = 56.1 g mol". In one analysis the mass of dolomite used was 3.72 g. The mass of calcium oxide formed was found to be 1.24 g. %3D Questions: 1. What is the chemical formula of the analyte in this problem? 2. What is precipitating agent? 3. Give the molecular formula of the precipitate measured in this problem. g. 4. What is the mass(g) of the analyte? Show your answer in correct no. of SF. 5. What is the % w/w of the analyte in the sample? Give the answer in correct answer of SF. 026.9 033.3 056 060.1

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter18: Representative Metals, Metalloids, And Nonmetals
Section: Chapter Questions
Problem 115E: A mixture of xenon and ?uorine was heated. A sample of the white solid that formed reacted with...
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Qu The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by gravimetry. The dolomite sample is dissolved in acid and the calcium ions (Ca2*) present are precipitated as calcium oxalate (CaC204) with MM: 128.1 g/mol. The calcium oxalate is filtered, dried and strongly heated to form calcium oxide (Cao) with Formula Mass (FM) = 56.1 g mol". In one analysis the mass of dolomite used was 3.72 %3D g. The mass of calcium oxide formed was found to be 1.24 g. Questions: 1. What is the chemical formula of the analyte in this problem? 2. What is precipitating agent? 3. Give the molecular formula of the precipitate measured in this problem. g. 4. What is the mass(g) of the analyte? Show your answer in correct no. of SF. 5. What is the % w/w of the analyte in the sample? Give the answer in correct answer of SF. 026.9 033.3 056 060.1 02.23
Transcribed Image Text:Qu The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by gravimetry. The dolomite sample is dissolved in acid and the calcium ions (Ca2*) present are precipitated as calcium oxalate (CaC204) with MM: 128.1 g/mol. The calcium oxalate is filtered, dried and strongly heated to form calcium oxide (Cao) with Formula Mass (FM) = 56.1 g mol". In one analysis the mass of dolomite used was 3.72 %3D g. The mass of calcium oxide formed was found to be 1.24 g. Questions: 1. What is the chemical formula of the analyte in this problem? 2. What is precipitating agent? 3. Give the molecular formula of the precipitate measured in this problem. g. 4. What is the mass(g) of the analyte? Show your answer in correct no. of SF. 5. What is the % w/w of the analyte in the sample? Give the answer in correct answer of SF. 026.9 033.3 056 060.1 02.23
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