CHE 100-Lab 1 - Measurement Background Reference: Openstax - Chemistry, Atoms First, 2e Section 1.4 - measurement units, derived units, density, water displacement method Section 1.5 - measurement uncertainty, number of digits Chemlibre - Basics of GOB Chemistry (Ball) Section 1.5-measurement uncertainty, number of digits Chem Libre - Chemistry for Allied Health (Soult) Section 1.2-measurement uncertainty, number of digits CHE100 Video Tutorials Measurement units, measurement uncertainty and "every digit is certain, except for the last one" rule. Materials Needed: Electronic balance, beakers (10,50,250 mL), graduated cylinder (100 mL), volumetric flask (50 cylinders. mL), water, household item that will sink in water and fit in one of the beakers or graduated Procedure: 1. Water density (different quantities of water) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct number of digits, considering the "every digit is certain, except for the last one" rule. You can choose any size sample of water. Remember to determine the mass of just the water, not the container.com i. Use a 10mL beaker ii. Use a 50mL beaker iii. Use of 250mL beaker b. Calculate the density of water for all three experiments. Record your calculated result to the tenths place (units: g/mL). Compare to the known density of water, 1.0g/mL c. Question: Did the water density change significantly as the sample size changed? 2. Water density (different types of glassware) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct number of digits, considering the "every digit is certain, except for the last one" rule. In order to determine the impact of the glassware, you will use the same volume of water. Remember to determine the mass of just the water, not the container. i. 50mL water, using a 100mL beaker bed ii. 50mL water, using a 100mL graduated cylinder iii. 50mL water, using a 50mL volumetric flask b. Calculate the density of water for all three experiments. Record your calculated result to the hundredths place (units: g/mL). Compare to the known density of water, 1:0g/mL c. Question: Which of the measurement(s) showed density furthest from the known density of water (1.0 g/mL)? What is a possible reason for this?

CHE 100-Lab 1 - Measurement Background Reference: Openstax - Chemistry, Atoms First, 2e Section 1.4 - measurement units, derived units, density, water displacement method Section 1.5 - measurement uncertainty, number of digits Chemlibre - Basics of GOB Chemistry (Ball) Section 1.5-measurement uncertainty, number of digits Chem Libre - Chemistry for Allied Health (Soult) Section 1.2-measurement uncertainty, number of digits CHE100 Video Tutorials Measurement units, measurement uncertainty and "every digit is certain, except for the last one" rule. Materials Needed: Electronic balance, beakers (10,50,250 mL), graduated cylinder (100 mL), volumetric flask (50 cylinders. mL), water, household item that will sink in water and fit in one of the beakers or graduated Procedure: 1. Water density (different quantities of water) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct number of digits, considering the "every digit is certain, except for the last one" rule. You can choose any size sample of water. Remember to determine the mass of just the water, not the container.com i. Use a 10mL beaker ii. Use a 50mL beaker iii. Use of 250mL beaker b. Calculate the density of water for all three experiments. Record your calculated result to the tenths place (units: g/mL). Compare to the known density of water, 1.0g/mL c. Question: Did the water density change significantly as the sample size changed? 2. Water density (different types of glassware) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct number of digits, considering the "every digit is certain, except for the last one" rule. In order to determine the impact of the glassware, you will use the same volume of water. Remember to determine the mass of just the water, not the container. i. 50mL water, using a 100mL beaker bed ii. 50mL water, using a 100mL graduated cylinder iii. 50mL water, using a 50mL volumetric flask b. Calculate the density of water for all three experiments. Record your calculated result to the hundredths place (units: g/mL). Compare to the known density of water, 1:0g/mL c. Question: Which of the measurement(s) showed density furthest from the known density of water (1.0 g/mL)? What is a possible reason for this?

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 22RPS: The accepted value of the melting point of pureaspirin is 135 C. Trying to verify that value, you...

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