Solve the following queries dealing with gravimetric analysis a) If a scientist wants to obtain a precipitate of AgCl that weighs 0.5 g from a sample that contains 12% chlorine, what is the amount of sample that must be taken? b) A sample that contains only CaCO3 and MgCO3 is calcinated to CaO and MgO. The mixture of oxides weighs exactly ½ the weight of the original sample. Calculate the % of CaO and MgO in the sample.

Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
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Chapter15: Complex Ion And Precipitation Equilibria
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show full and complete procedure HANDWRITTEN only. Please answer a) and b), note they are subparts of question 1. 

1. Solve the following queries dealing with gravimetric analysis
a) If a scientist wants to obtain a precipitate of AgCl that
weighs 0.5 g from a sample that contains 12% chlorine,
what is the amount of sample that must be taken?
b) A sample that contains only CaCO3 and MgCO3 is
calcinated to CaO and MgO. The mixture of oxides
weighs exactly ½ the weight of the original sample.
Calculate the % of CaO and MgO in the sample.
Transcribed Image Text:1. Solve the following queries dealing with gravimetric analysis a) If a scientist wants to obtain a precipitate of AgCl that weighs 0.5 g from a sample that contains 12% chlorine, what is the amount of sample that must be taken? b) A sample that contains only CaCO3 and MgCO3 is calcinated to CaO and MgO. The mixture of oxides weighs exactly ½ the weight of the original sample. Calculate the % of CaO and MgO in the sample.
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