Question

True or False: If you find the percent by mass of all of the elements in a compound, it will always add up to exactly 100.00%

Answer 1

Answer: true

Explanation: because Mass percentage composition is found by calculating a fraction of the total mass by each element present in a compound. The whole compound itself would equal one or 100% in all the elements that make it up would only be a fraction, so it will always have to add up to 100%