May someone please do numbers 5,6, and 7 and show work. I'd like to know how to do it.

Unknown no. Trial 1 Trial 2 Trial 3 1. Mass of fired crucible and lid (g) 31.69739.32.84659.33.07679 2. Mass of fired crucible, lid, and hydrated salt (g) 34.7524935.5916936.17609 3. Instructor's approval of flame and apparatus 4. Mass of crucible, lid, and anhydrous salt 1st mass measurement (g) 33.90189.35.0214935.27559 2nd mass measurement (g) 33.85209.35.00579.35.24959 3rd mass measurement (g) 350024933.841193524459 5. Final mass of crucible, lid, and anhydrous salt (g) 33.8411g 35.00249 35.24459 Calculations 1. Mass of hydrated satt (g) 305519.3.3519.09939 2. Mass of anhydrous salt (g) 2.143892.1559.678 3. Mass of water lost (g) 0.911390.889290.0319 4. Percent by mass of volatile water in hydrated salt (\%) 29.8%=2.2%1y. 5. Average percent H2O in hydrated salt ( %H2O ) Data Analysis, B 6. Standard deviation of %6H2O Data Analysis, C 7. Relative standard deviation of SH2O in hydrated salt ( %RSD ) Data Analysis, D * Show calculations on next page. Experiment 589