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Density of an Unknown Liquid Essay

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Mass of graduated cylinder and liquid (grams) 30. 65 30. 62 30. 565 Part II: Density of Irregular-shaped Solid Mass of solid (grams) 39. 537 38. 515 40. 975 Volume of water (millimeters) 50. 01 49. 9 52. 4 54. 9 54 57 Part Ill: Density of Regular-shaped Solid Mass of solid (grams) 27. 7 27. 71 26. 8 Length of solid (centimeters) 5. 26 5 4. 5 3 4 3. 5 Height of solid (centimeters) 2. 5 2 Part I: Density of Unknown Liquid 1 . Calculate the mass of the liquid for each trial.

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Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid. ) Trial 1 30. 65-25. 55=5. 10 Trial 2 30. 62-25. 56=5. 060 Trial 3 30. 565-25. 55=5. 015 2. Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of the liquid. ) Trial 1: 5. 1/8. 8=0. 58 Trial 2: 5. 06/8. 65=. 58 Trial 3: 5. 015/8. 5=0. 59 3. Calculate the volume of the irregular-shaped solid for each trial. (Subtract the volume of the water from the total volume of the water and solid. ) Trial 1: 54. 9-50. 01=4. 89 Trial 2: Trial 3: 54-49. 9=4. 1 7-52. 4=4. Of the solid by the volume of the solid calculated above. ) Trial 1: 39. 537/4. 89=8. 08 Trial 2: 38. 515/4. 1=9. 4 Trial 3: 40. 975/4. 6=8. 9 5. Calculate the volume of the regular shaped solid for each trial. (Multiply the length x width x height for each trial to get the volume in the unit CM.

) Trial 1: 5. 26 x 3 x 2. 5= 39. Corn Trial 2:xx =corn Trial 3: 4. 5 x 3. 5 x 31. Corn 6. Calculate the density of the regular-shaped solid for each trial. (Divide the mass of the solid by the volume calculated above. ) Trial 1: 27. 7/39. 5= . 701 Trial 2: 27. 71/30=0. 92 Trial 3: 26. 8/31. 95= . 849 Questions and Conclusions: 1 .

How would you determine the proper number of significant figures of a liquid using a graduated cylinder? I would determine the proper number of sigh figs off liquid using a graduated cylinder by first measuring liquid in it, which for example is 20 ml. There would be only one sigh fig since there is no number greater than O after the first digit, and nothing before it. 2. Can Just one measurement be considered precise? Can Just one measurement be considered accurate? Explain your answers completely. One measurement cannot be considered precise, because precision is measured by their closeness of many assortments, such as 40, 39. 9, 40. 01. 3. In parts II and Ill of the lab you used different sized objects in each trial. Compare the density values that you calculated for these items, how do the three trials compare? The density values of the irregular shaped object and regular shaped object were much different because the irregular object ended up being much denser than the regular shaped object. The three trials vary, since measurements of both objects were not constant when a new trial started, because as soon as a trial began, it started out with a different mass/volume of the object

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Density of an Unknown Liquid Essay. (2017, Oct 01). Retrieved from https://graduateway.com/density-of-an-unknown-liquid/

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