Procedure Part 1: A. Density Determination 1. You will use the 100 mL graduated cylinders for density determination. Weigh the empty graduated cylinder and record the mass. 2. Fill the graduated cylinder with 90 mL of the liquid and read the volume as accurately as possible at the meniscus. 3. Measure the temperature of each liquid using a thermometer. 4. Weigh the graduated cylinder plus water and record the mass. Determine the mass of water by subtraction, and determine the density (p) using: m v Where m is the mass in grams, and v is the volume in mL, Express the density in kg/m³. 5. Use the above steps to determine the density of water, and glycerin. B. Specific Gravity Determination 1. Calculate the specific gravity (sg) of each fluid using Equation 2: (Pftuid)calculated sg Pwater Assume that the density of water is equal to 998 (kg/m³) at room temperature (20 °C). 2. Using the information on the hydrometer set case, determine which hydrometer is to be used for each liquid based on your calculated values. 3. Place the hydrometer in the liquid and wait for it to stabilize. This can take a couple minutes. 4. Read the value at the meniscus for each liquid. Page 1|4

Procedure Part 1: A. Density Determination 1. You will use the 100 mL graduated cylinders for density determination. Weigh the empty graduated cylinder and record the mass. 2. Fill the graduated cylinder with 90 mL of the liquid and read the volume as accurately as possible at the meniscus. 3. Measure the temperature of each liquid using a thermometer. 4. Weigh the graduated cylinder plus water and record the mass. Determine the mass of water by subtraction, and determine the density (p) using: m v Where m is the mass in grams, and v is the volume in mL, Express the density in kg/m³. 5. Use the above steps to determine the density of water, and glycerin. B. Specific Gravity Determination 1. Calculate the specific gravity (sg) of each fluid using Equation 2: (Pftuid)calculated sg Pwater Assume that the density of water is equal to 998 (kg/m³) at room temperature (20 °C). 2. Using the information on the hydrometer set case, determine which hydrometer is to be used for each liquid based on your calculated values. 3. Place the hydrometer in the liquid and wait for it to stabilize. This can take a couple minutes. 4. Read the value at the meniscus for each liquid. Page 1|4

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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