32 Matching Annotations
  1. Jan 2025
    1. A piece of weighing paper was placed on thebalance to provide a barrier to protect the balance from corrosion.

      unnecessary plus sounds like something from the packet...

    1. That completes thesteps and then repeat the process three times for each beverage including cranberryjuice, Dr. Pepper, and the 4% sugar.

      Grammar is messed up

    2. First subtractthe initial volume from the final volume, take the answer and input it into equation 1 asthe volume or “v” in this case, the result given is the density of the rod

      The run on sentence to end all run on sentences.

    1. A calibration standard of 2% sugar was assigned from a total of six standards: 0, 2, 4, 8and 16 percent sugar

      You don't need to say that the standard was assigned

    2. The mass of a metal rod was measured using an electronic balance, and the mass wasrecorded. A graduated cylinder was filled approximately half-way with tap water and the volumewas measured. The metal rod was then gently slid into the graduated cylinder, the new watervolume was measure.Sugar Content and Density:A calibration standard of 2% sugar was assigned from a total of six standards: 0, 2, 4, 8and 16 percent sugar.The mass of a 50 mL beaker was measured using an electronic balance. A 10 mL volumetricpipette was used to measure 10 mL of the 2% calibration standard into the beaker, the new massof the beaker was measured using an electronic balance.This process was then repeated two more times for a total of three trials, recording eachinitial mass and final mass of the beaker in each procedure. The density of each trial was foundusing the equation: 𝑑 = ௠௩ . Where “d” is density, “m” is final mass minus initial mass, and “v” isliquid volume. The average of the three trials were then calculated and recorded.This entire procedure was completed two more times, once with Apple Juice (Fruit Juice)and once with Dr. Pepper (Soda). The data was recorded, and the average densities werecalculated.Using the densities measured for each of the standard calibration mixtures, MicrosoftExcel was used to create a scatter plot of the density in g/mL against the percent sugar. A lineartrendline with an equation was added to the plot. Questions 6-7 were then completed using thecreated scatter plot and its given equation.Figure 1: A scatter plot with a trendline of the found calibration standard densities where the density is against thepercent sugar.Grading Rubricy = 0.0038x + 0.99310.9911.011.021.031.041.051.060 2 4 6 8 10 12 14 16 18Density (g/mL)% Sugar

      The spacing is wrong.

    1. Put the metal rod on the scale and record its weight. Put it in half-full flask and record the volume.Calculate the density of the rod using d=m/v

      Someone tell this guy the meaning of passive voice please...

    1. After calculating each of those using the calibration standard averages of theclass for the sugar % create a plot graph and a trend line (Figure).

      Instructions... again... STOP WITH THE INSTRUCTIONS. Its supposed to be in a passive voice... A P A S S I V E VOICE!!!

    2. Using a balance, place weigh paper on it and zero the scale. Using that measure a metalrod and record measurement. Then take a 25 mL graduated cylinder and fill about half withwater then record the exact volume. In the graduated cylinder add the metal rod, record the newvolume.

      This was written as instructions, use a passive voice instead.