Put the following experimental steps in the proper order. Question 4 options: Pour each solution into the calibrated ground glass joint Erlenmeyer flask over the sink (you must overfill slightly). Replace the stopper and dry off thoroughly each time, and mass each solution. Calculate the density of each solution. Use the calibration curve to determine the concentration of alcohol in the unknown. Using the calculated recipe in your Excel spreadsheet that you did before lab, prepare 40 mL of 20%, 15%, 10%, and 5% alcohol by volume ethanol solutions in clean, dry, and clearly labeled 125 mL Erlenmeyer flasks. Using the table, find the density of water at the temperature measured. Determine the volume of the flask. Obtain 75 mL of 30% alcohol from the bottles in the hood in a 100 mL beaker. The graduations on the beaker can be used for this measurement. The ethanol is denatured with chemicals and cannot be consumed internally or topically. Obtain 200 mL of water (can be tap or deionized) in a 250 mL beaker. Plot the density versus concentration of alcohol in Excel. Label all axes with units. Fit a line of best fit (linear trendline). If the R2 is less than 0.99 consult the TA. You may have to remake some solutions in this case – do not discard any solutions until the TA has checked your data. 1 Measure the mass of an clean, dry, and empty ground glass joint Erlenmeyer flask with the stopper. Fill the flask to the top with water and measure the temperature of the water using the Microlab thermistor. Replace the stopper, dry the outside and mass the full flask. Obtain 30 mL of unknown commercial beverage solution in a clean, dry, and labeled 50 mL beaker. Determine the density of the unknown.