Ch.3 - Chemical ReactionsWorksheetSee 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: Dimethylcadimum, Cd(CH3)2, is considered to be one of the most dangerous chemicals on Earth. It is volatile, poisonous, carcinogenic and explosive. What is the mass percent of cadmium in dimethylcadmium?A. 88.2% B. 16.9% C. 78.9% D. 4.2% E. 51.0%

Problem

Dimethylcadimum, Cd(CH3)2, is considered to be one of the most dangerous chemicals on Earth. It is volatile, poisonous, carcinogenic and explosive. What is the mass percent of cadmium in dimethylcadmium?

A. 88.2%
B. 16.9%
C. 78.9%
D. 4.2%
E. 51.0%

Solution

Figure out the molar mass of the Cd(CH3)2 and divide it by the atomic mass of Cd to find the mass percent of Cd in the compound where:

mass % of atom = atomic mass of atomtotal molar mass of compoundx100


Step 1. Determine the molar mass of Cd(CH3)2

Step 2. Divide the atomic mass of Cd over the molar mass of Cd(CH3)2


Step 1. Determine the molar mass of Cd(CH3)2

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