please solve showing calculations

please solve 9, 12-17

2. Mass of beaker + unknown 140.044 3. Mass of beaker 130.051 4. Mass of unknown 1.993 5. Mass of beaker and residue (step 7) 6. Mass of NH4Cl in unknown 7. Mass of filter paper +SiO2 8. Mass of filter paper 139827 0.217 9. Mass of SiO2 in unknown 10. Mass of evaporating dish +NaCl 11. Mass of everaporating dish 2. 719 12. Mass of NaCl in unknown 13. Actual sum of masses of recovered components (#6,#9,#12) 14. Actual \% Recovered 15. Percent by mass of NH4Cl 16. Percent by mass of SiO2 17. Percent by mass of NaCl