**Statistical Analysis of Laboratory Result: Accuracy and Precision** Shantel was exploring the different types of glassware in the chemistry lab and wanted to compare how well a graduated cylinder delivered 5.00 mL of water. The below data was collected by weighing an empty beaker, zeroing the balance, and weighing the water delivered. The temperature of the water is 20.4°C. The density of water at this temperature is 0.998120 g/mL. **Objective:** Determine the average, % error, standard deviation, and coefficient of variation (CV) for the graduated cylinder. You may do the calculations in Excel if you wish. Report your answers to the appropriate number of significant figures. **Data from Trials:** - Trial 1: 4.9821 g - Trial 2: 4.9745 g - Trial 3: 5.0112 g - Trial 4: 5.0041 g

After finishing the lab, Peter successfully identified his unknown was acetone (molar mass: 58.1 g/mol).  He then realized that he had forgotten to write down the temperature on his data sheet because he and has partner had done the math together.  Peter unfortunately doesn't know his lab mates phone number or last name, so he can't look him up on social media.  Poor Peter - he only has 30 minutes to turn in his lab report.   Based on the data he collected below - what was the temperature of his water bath?   Peter remembers that his water bath never boiled, but his acetone did fully evaporate. Mass of flask: 77.002 g Mass of flask + unknown condensed liquid: 77.487 g Temperature of water bath: ???? Pressure of gas in our system: 0.997 atm Volume of gas in our system: 250 mL   Group of answer choices: A) 85 °C B) 100 °C C) 91 °C D) 97 °C

Please help with question 3

Volumetric Glassware and Balances In an experiment for calibration of a 5.00 mL. pipet, the following data was obtained for 5.00 ml. of the pipet at 15°C   The correction <--0.04 mL The volume of 1 g of water at 15°C- 1.0021 mL   The weight of water delivered by the pipet (g) is:   a) 5.06 b) 4.92   c) 5.03   d) 4.95   e) 5.09