Answer Happy

Lab: Dem Nam Bac F Measurement 1. 2. Mass of Metal (g) Mass of Empty Calorimeter (g) Mass of Calorimeter with Water (g) Mass of Water (g) Initial Temperature of Water, T (C) Final Temperature of Water, T("C) Temperature of Boiling Water, Thing ("C) 10090 = bailing prit Calculations T 28.0 Ti-20.6 Trial 1 104.089 Trial 2 33.8 -273 5.93g 5.939 5.93g 30.91 30.91g 30.91g 24.989 24.899 24.89g 20.6°C Show calculations for one trial. Include all units. Round all calculated values to the allowed significant figures. Box numerical answers. Calculate the q of the water. 28.0℃ 100°C For each trial calculate the AT of the water. (AT=Tr-T) Triall T3 384 -32.6 7.40°C 6.5°C 5.8°C Trial 2 Trial 3 104.08 104.080 27.3°C 32.6°C 338C 38.4°C 100°C 100°C (q=mx C XAT) T1 = 7,4°C T2 = 6,5% T3= 5.8° 6. Given the information you gathered in the pre-lab, how long would it take Cesium-137 to become same to dispose of (show your calculation)?
Procedure 1. As demonstrated by your instructor, rinse and fill your burette with NaOH solution. Record the concentration of the NaOH solution in your data table. 2. Measure 25 mL of a vinegar sample into a 125 mL Erlenmeyer flask. 3. Add 1 mL of the indicator (phenolphthalein) to the sample. 4. Slowly add NaOH solution from the burette to the flask while swirling the flask. Titrate until the solution color turns from colorless to a light pinkish. 5. Repeat the titration twice more. 6. Rinse the burette twice with distilled water and then fill with a third measure of distilled water before returning the burette, as demonstrated by your instructor.