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1. Compare the density you found for 12.0 mL, 18.5 mL and 42.8 mL of the liquid. How do they compare? Why? 2. Calculate the average density of your three trials. Show your calculation, 1.49 g/mL 3. The unknown liquid was glycerol with a density of 1.25 g/mL. Which of your trials was closest to that value? trial #2 . Consider your average. What is your percent error? (The formula is in the introduction. Show your calculations). Are you analyzing accuracy or precision? %% x 100

1. Compare the density you found for 12.0 mL, 18.5 mL and 42.8 mL of the liquid. How do they compare? Why? 2. Calculate the average density of your three trials. Show your calculation, 1.49 g/mL 3. The unknown liquid was glycerol with a density of 1.25 g/mL. Which of your trials was closest to that value? trial #2 . Consider your average. What is your percent error? (The formula is in the introduction. Show your calculations). Are you analyzing accuracy or precision? %% x 100

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 14CR
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1. 3. Density of Liquids Data Table (Don't forget to include units on all numbers in data and calculations.) 4. Mass of empty graduated cylinder Volume of liquid Mass of graduated cylinder and liquid Mass of liquid Density Make sure to record all the numbers the scale provides, even the zeroes. Read from cylinder. Don't forget to include ONE estimated digit between the dashes. The mass here should be higher than the mass of the empty graduated cylinder. This is a calculation. Show the subtraction for trial #1. Keep sig.figs. to the same decimal place as the scale provided. Show the formula D=M/V. Plug in the numbers with units. Solve. Round off to three sig.figs (like your volume measurements). Trial 1: 40.98939 Show calculations below for trial 1 only. 12.01 ml 56.1093g x 100 5610935-40१४१3g = 15 12 g D: 15.129/12.01ml D: 26 g/mL 2. Calculate the average density of your three trials. Show your calculation, 1.49 g/mL Trial 2: 00 58859 0151533 18.5900 65 Wasg need help with 1 and 4 Trial 3: 62 15 m Compare the density you found for 12.0 mL, 18.5 mL and 42.8 mL of the liquid. How do they compare? Why? 125.4649 23 32g 3.94g D= 1.25g/m D: 1.96gla The unknown liquid was glycerol with a density of 1.25 g/mL. Which of your trials was closest to that value? Show Transcribed Text trial #2 Consider your average. What is your percent error? (The formula is in the introduction. Show your calculations). Are you analyzing accuracy or precision?
Transcribed Image Text:1. 3. Density of Liquids Data Table (Don't forget to include units on all numbers in data and calculations.) 4. Mass of empty graduated cylinder Volume of liquid Mass of graduated cylinder and liquid Mass of liquid Density Make sure to record all the numbers the scale provides, even the zeroes. Read from cylinder. Don't forget to include ONE estimated digit between the dashes. The mass here should be higher than the mass of the empty graduated cylinder. This is a calculation. Show the subtraction for trial #1. Keep sig.figs. to the same decimal place as the scale provided. Show the formula D=M/V. Plug in the numbers with units. Solve. Round off to three sig.figs (like your volume measurements). Trial 1: 40.98939 Show calculations below for trial 1 only. 12.01 ml 56.1093g x 100 5610935-40१४१3g = 15 12 g D: 15.129/12.01ml D: 26 g/mL 2. Calculate the average density of your three trials. Show your calculation, 1.49 g/mL Trial 2: 00 58859 0151533 18.5900 65 Wasg need help with 1 and 4 Trial 3: 62 15 m Compare the density you found for 12.0 mL, 18.5 mL and 42.8 mL of the liquid. How do they compare? Why? 125.4649 23 32g 3.94g D= 1.25g/m D: 1.96gla The unknown liquid was glycerol with a density of 1.25 g/mL. Which of your trials was closest to that value? Show Transcribed Text trial #2 Consider your average. What is your percent error? (The formula is in the introduction. Show your calculations). Are you analyzing accuracy or precision?
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