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The alloy brass contains lead as an impurity in the form of lead sulphate (PbSO,). By dissolving brass in nitric acid, lead sulphate is precipitated. A sample of brass weighing 5.0 g is dissolved in nitric acid and 0.03 g of precipitate is formed. Calculate the percentage of lead present in the brass sample.

The alloy brass contains lead as an impurity in the form of lead sulphate (PbSO,). By dissolving brass in nitric acid, lead sulphate is precipitated. A sample of brass weighing 5.0 g is dissolved in nitric acid and 0.03 g of precipitate is formed. Calculate the percentage of lead present in the brass sample.

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
Chapter4: Stoichiometry Of Chemical Reactions
Section: Chapter Questions
Problem 58E: A mordant is a substance that combines with a dye to produce a stable fixed color in a dyed fabric....
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3.16 The alloy brass contains lead as an impurity in the form of lead sulphate (PBSO,). By dissolving brass in nitric acid, lead sulphate is precipitated. A sample of brass weighing 5.0 g is dissolved in nitric acid and 0.03 g of precipitate is formed. Calculate the percentage of lead present in the brass sample. 3.17 How many kilograms of CO, are obtained by the decomposition of 100 kg of limestone containing 94.5% CaCO3, 4.2% MgCO, and 1.3% inert materials? What is the volume of CO, obtained at STP?
Transcribed Image Text:3.16 The alloy brass contains lead as an impurity in the form of lead sulphate (PBSO,). By dissolving brass in nitric acid, lead sulphate is precipitated. A sample of brass weighing 5.0 g is dissolved in nitric acid and 0.03 g of precipitate is formed. Calculate the percentage of lead present in the brass sample. 3.17 How many kilograms of CO, are obtained by the decomposition of 100 kg of limestone containing 94.5% CaCO3, 4.2% MgCO, and 1.3% inert materials? What is the volume of CO, obtained at STP?
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