Chemistry
Percent Composition
Mass percent of an element in a compound.
Formula
Formula
% = elem masstotal mass · 100
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| elem | element mass | computed result | — | result |
| total | compound mass | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenelement mass = 16, compound mass = 18.015
Result88.81487649
Example 2
Givenelement mass = 12, compound mass = 44.01
Result27.26653033