No, the percent by mass of each element in compound does not depend on the amount of element used to make the compound
The mass percent of each element in a compound is by definition, the compound's percent composition. 100% of the compound is represented by the molar mass. the composition of the elements is fixed in each compound. according do law of multiple proportions different compounds may be formed with same elements but in different proportions.so percent by mass of each element does not depend on amount of element used to make compound
