2Mg + O2 → 2 MgO 30.5 grams of MgO are produced by the reaction between 30.0 grams of Mg and an excess of O2. What is the percent yield? 2Mg + O2 → 2 MgO 15.5 grams of Mg react with 20 grams of O2. What is the limiting reactant?

2Mg + O2 → 2 MgO 30.5 grams of MgO are produced by the reaction between 30.0 grams of Mg and an excess of O2. What is the percent yield? 2Mg + O2 → 2 MgO 15.5 grams of Mg react with 20 grams of O2. What is the limiting reactant?

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 5STP

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

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Im stuck on these 2 questions please help

2Mg + O2 → 2 MgO

30.5 grams of MgO are produced by the reaction between 30.0 grams of Mg and an excess of O2. What is the percent yield?

2Mg + O2 → 2 MgO

15.5 grams of Mg react with 20 grams of O2. What is the limiting reactant?

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