Inoitosidua omoz slupeilw zi) OXto 286M Stoichiometry: Mass-Mass Experimentation has shown that there is usually a definite relationship between the number of moles of reactant and the number of moles of product in a chemical reaction. If one mole of A reacts with two moles of B, then it is reasonable to assume that one molecule of A can react with two molecules of B. The quantitative study of chemical reactions has led to the development of many important theories about the nature of matter. Mass-Mass experiments involve the mass relationships which accompany a chemical reaction. This experiment can yield very accurate results if care is taken in weighing, decanting, and filtering both reactants and products. loM The reaction involves: K2CrO4 (aq) Pb(NO3)(aq) → 2KNO3(aq) PbCrO4 (s) + Potassium Chromate Lead Nitrate Potassium Nitrate Lead Chromate eo A The PbCrO4 (s) is a yellow precipitate that can be collected on a filter paper and weighed. eko DATA 1. First calculate the mass of exactly 0.005 moles of Potassium Chromate and Lead Nitrate Show work here: grams K2CrO4/calculated (this is what needs to be weighed), grams Pb(NO3)2/calculated (this is what needs to be weighed), lY dant

Inoitosidua omoz slupeilw zi) OXto 286M Stoichiometry: Mass-Mass Experimentation has shown that there is usually a definite relationship between the number of moles of reactant and the number of moles of product in a chemical reaction. If one mole of A reacts with two moles of B, then it is reasonable to assume that one molecule of A can react with two molecules of B. The quantitative study of chemical reactions has led to the development of many important theories about the nature of matter. Mass-Mass experiments involve the mass relationships which accompany a chemical reaction. This experiment can yield very accurate results if care is taken in weighing, decanting, and filtering both reactants and products. loM The reaction involves: K2CrO4 (aq) Pb(NO3)(aq) → 2KNO3(aq) PbCrO4 (s) + Potassium Chromate Lead Nitrate Potassium Nitrate Lead Chromate eo A The PbCrO4 (s) is a yellow precipitate that can be collected on a filter paper and weighed. eko DATA 1. First calculate the mass of exactly 0.005 moles of Potassium Chromate and Lead Nitrate Show work here: grams K2CrO4/calculated (this is what needs to be weighed), grams Pb(NO3)2/calculated (this is what needs to be weighed), lY dant

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 141QRT

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