Question #bc737
1 Answer
Jan 18, 2014
The percent composition of an element is 100 %.
An element is a pure substance. There is nothing else in it.
Assume you have 25.0 g of the element.
% by mass = mass of element/total mass × 100 % =
(25.0 g)/(25.0 g + everything else) × 100% =
