Trial 1 Trial 2 Trial 3 Mass of empty Erlenmeyer flask (mj) 12.0896 80 , 6979 8 Mass of flask and vinegar (m;) Z LO 16 4 , 90.5928 1 Mass of vinegar 9.9274 . 9.9148 , 9. 8947 Final buret volume (V2) 6. 69 ml 13.19 mL 19.87 ML Initial buret volume (V,) 0.0 ml 6.69 mL 13 19 ml Volume of NaOH Delivered (V2 - Vi) 6.5 ml 6- 61 ml Volume of NaOH Delivered in liters Moles of NaOH used LIIL Moles of acetic acid in sample Mass of acetic acid Mass percent (diluted) Mass percent (undiluted) Average mass percent (Consider Q test)