It was composed of war captives and Christian youths pressed into service; all the recruits were converted to Islam and trained under the strictest discipline. It was originally organized by Sultan Murad I. The Janissaries gained great power in the Ottoman Empire and made and unmade sultans.
First you should know that a dependent variable is the one which its values depends of the ones of other variable. In this case, <em>the final mass is the dependent variable</em> because this amount directly depends on how much acid the scientist pours in the initial mass to increase or decrease it. This is also why she remeasures it once the experiment is done.
