Ch.2 - Atoms & ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Which procedure can be used to demostrate experimentally that this reaction obeys the Law of Conservation of Matter? 2 Mg (s) + O2 (g) → 2 MgO (s) (A) Take a mass of 1.0000 g of Mg ribbon, burn it i

Problem

Which procedure can be used to demostrate experimentally that this reaction obeys the Law of Conservation of Matter?

2 Mg (s) + O(g) → 2 MgO (s)

(A) Take a mass of 1.0000 g of Mg ribbon, burn it in pure O2 , and compare the mass of the product with the original mass of the Mg.

(B) Show that the sum of two atomic molar masses of Mg plus one molecular mass of O2 is equal to two formula molar masses of MgO.

(C) Determine the mass of a sealed flash-bulb containing magnesium and oxygen, ignite the mixture, cool, and compare the final mass of bulb plus contents with the original mass of the bulb plus contents.

(D) Burn 1.0000 g of Mg ribbon in a tall beaker filled with air, scrape out all the MgO formed and compare with the original mass of the Mg.