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: Calculate the mass percent composition of lithium ion in Li 3PO4.a. 30.72 %b. 55.27 %c. 20.82 %d. 26.75 %e. 17.98 %

Problem

Calculate the mass percent composition of lithium ion in Li 3PO4.

a. 30.72 %

b. 55.27 %

c. 20.82 %

d. 26.75 %

e. 17.98 %

Solution

We are asked to calculate for the percent by mass (mass %) of  lithium ion (Li) in Li 3PO and to do that we’re going to use the mass percent formula shown below:


mass percent = mass element total mass of compound×100


For the percent by mass C, we’re going to rewrite the equation as:


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