1. A student collects the following data to determine the density of dichloromethane (DCM), a liquid at 25°C. Complete the Data/result table. Show your work and includes units. The reference densities values for dichloromethane and water at 25°C are reported to bel.318 g/ml and 1.008 g/ml respectively. Data Trial 1 Trial 2 Mass of empty graduated cylinder 97.86 g Mass of cylinder + DCM 99.23 g 131.04 g 139.85 Mass of the DCM Volume of DCM 25.2 mL 30.8 mL Density of DCM Average Density of DCM % Error

1. A student collects the following data to determine the density of dichloromethane (DCM), a liquid at 25°C. Complete the Data/result table. Show your work and includes units. The reference densities values for dichloromethane and water at 25°C are reported to bel.318 g/ml and 1.008 g/ml respectively. Data Trial 1 Trial 2 Mass of empty graduated cylinder 97.86 g Mass of cylinder + DCM 99.23 g 131.04 g 139.85 Mass of the DCM Volume of DCM 25.2 mL 30.8 mL Density of DCM Average Density of DCM % Error

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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2. A student performs an experiment Her data is below: Table 1. Masses Before and After Pulling Steel Wool Apart Trial 1 Trial 2 Trial 3 158.93 g 157.45 g 145.67 g Initial mass of steel wool Final mass of steel wool Difference AVERAGE 158.92 g -0.01 g 157.48 g 0.03 g -0.003 g 145.64 g -0.03 g Draw a diagram to show the particles before and after pulling: Before After
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A liquid has the volume of 12.6 mL. and density of 2.75 g/ mL. . Calculate the mass in cg.
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Data Table 1. Mass of Pipetted Samples of Water (The first one is done for you. Sample Density (g/mL) mL Sample Mass (g) 1.00 0.99 g D = mass/volume = 0.99 g/1.00 mL = 0.99 g/mL 3.00 2.98 g /3.00 mL = 2.98 g 4.00 3.99 g /4.00 mL = 3.99 g 5.00 5.01 g 5.01 g /5.00 mL = 9.89 g 9.89 g/ 10.00 mL = 10.00
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of pentane, chloroform, ethanolamine, diethylamine, and acetone. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density pentane 0.63 3 cm chloroform 1.5 3 cm ethanolamine 1.0 3 cm diethylamine 0.71 3 cm acetone 0.79 3 cm Next, the chemist measures the volume of the unknown liquid as 0.502 L and the mass of the unknown liquid as 511. g.
ALEKS - Alec Nema - Knowledge x G converta^4 to cm^4- Google S x AFreezing Point Depression and Bc X iCPa7ZMmym9SLFOBedXazQM4lzqmR-1UH_pgXn9vQgZypE -→ C合 www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNs convert m^4 to cm^4- Google Search 出 Apps Sprouts Academy. 6 Online Tutoring C 400 Request Head google.com Question 20 Knowledge Check A NASA spacecraft measures the rate R of at which atmospheric pressure on Mars decreases with altitude. The result at a certain altitude is: 1 R=0.0914 kPa•km Convert Rto J.cm -4 J cm I Don't Know Submit O2020 McGraw-Hill Education, All Rights Reserved. Terms of Us Type here to search II
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Please help me answer and use pg 31 for questions A1 and A2 and pg 32 just for questions C1- C5 Thank you! Pg. 31 Density and Specific Gravity A. Density of Liquids A.1 Density Of water 1. Volume (mL) = ? 2. Mass of graduated cylinder= ? 3. Mass of cylinder + liquid= ? 4. Mass of liquid= ? 5. Density= ? (Show Calculations) A.2 Density of an Unknown liquid 1. Type of liquid sample= ? Volume of liquid= ? 2. Mass of graduated cylinder= ? 3. Mass of graduated cylinder + liquid= ? 4. Mass of liquid= ? 5. Density= ? (Show Calculations) Pg. 32 C. Density Of Solids 1. Mass of solid= ? 2. Initial water level= ? 3. Final water level with solid= ? 4. Volume of solid (3-2) 5. Density of the solid= g/mL ? (Show…