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CHE 111L section # The pre-lab assignment is due at the beginning of lab. Show all work and box the final answer to receive full credit. A student was instructed to find the density of rubbing alcohol (rubbing alcohol is a solution of ethanol and/or isopropyl alcohol in water). The student filled a buret and measured several different volumes and then determined the mass of each volume measured. The student took five measurements for volume and mass. The data is shown in the table. Answer the questions concerning the data in the table. Volume measured (mL) Mass measured (g) Density (g/mL) 14.87 14.082 0.9470 12.05 11.469 9.11 8.687 5.88 5.502 3.09 2.895 AVE. DENSITY Density from graph 1. Calculate the density for each set of data, and place the answer in the the answer has the correct number of significant figures. The first calcu complete. Also, calculate the average density

          CHE 111L section # The pre-lab assignment is due at the beginning of lab. Show all work and box the final answer to receive full credit. A student was instructed to find the density of rubbing alcohol (rubbing alcohol is a solution of ethanol and/or isopropyl alcohol in water). The student filled a buret and measured several different volumes and then determined the mass of each volume measured. The student took five measurements for volume and mass. The data is shown in the table. Answer the questions concerning the data in the table. Volume measured (mL) Mass measured (g) Density (g/mL) 14.87 14.082 0.9470 12.05 11.469 9.11 8.687 5.88 5.502 3.09 2.895 AVE. DENSITY Density from graph 1. Calculate the density for each set of data, and place the answer in the the answer has the correct number of significant figures. The first calcu complete. Also, calculate the average density

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CHE 111L section # The pre-lab assignment is due at the beginning of lab. Show all work and box the final answer to receive full credit. A student was instructed to find the density of rubbing alcohol (rubbing alcohol is a solution of ethanol and/or isopropyl alcohol in water). The student filled a buret and measured several different volumes and then determined the mass of each volume measured. The student took five measurements for volume and mass. The data is shown in the table. Answer the questions concerning the data in the table. Volume measured (mL) Mass measured (g) Density (g/mL) 14.87 14.082 0.9470 12.05 11.469 9.11 8.687 5.88 5.502 3.09 2.895 AVE. DENSITY Density from graph 1. Calculate the density for each set of data, and place the answer in the the answer has the correct number of significant figures. The first calcu complete. Also, calculate the average density

Added by Miguel -Ngel C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Cheryl Glor

10/03/2022

Step 1

Density is calculated by dividing mass by volume. For the second set of data: Density = Mass/Volume = 11.469g/12.05mL = 0.9519 g/mL For the third set of data: Density = Mass/Volume = 8.687g/9.11mL = 0.9536 g/mL For the fourth set of data: Show more…

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The pre-lab assignment is due at the beginning of lab. Show all work and box the final answer to receive full credit. A student was instructed to find the density of rubbing alcohol (rubbing alcohol is a solution of ethanol and/or isopropyl alcohol in water). The student filled a buret and measured several different volumes and then determined the mass of each volume measured. The student took five measurements for volume and mass. The data is shown in the table. Answer the questions concerning the data in the table. Volume measured (mL) Mass measured (g) Density (g/mL) 14.87 14.082 0.9470 12.05 11.469 9.11 8.687 5.88 5.502 3.09 2.895 AVE. DENSITY Density from graph 1. Calculate the density for each set of data, and place the answer in the the answer has the correct number of significant figures. The first calcu complete. Also, calculate the average density

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Transcript

00:01 Given the following data in the table, calculate the density to the correct number of significant figures.

00:08 So here is the data that we are given.

00:12 We are given a measure of volume in milliliters, which is going to be in column one, and the mass in column two.

00:23 The densities that we're going to be calculating is going to have units of grams per milliliter.

00:32 So since our density is going to be in grams per milliliter, all we're going to need to do is take the mass, which is going to be in grams, and divide it by the volume, which is in milliliters.

00:55 So since we have five measurements, let's label these a, b, c, d, and e.

01:04 So for a, the mass is 14 .082.

01:13 The volume is 14 .87.

01:19 So this is in grams per milliliter.

01:24 So when we divide it, it becomes 0 .947007.

01:32 We have to put this into correct significant figures.

01:37 Going to go down to four six figs since that is the smallest number that we have.

01:43 So this becomes 0 .9 470 grams per milliliter.

01:53 B is 11 .469 grams divided by 12 .05 milliliters, which is 0 .9 we have to go to four significant figures again.

02:17 So that becomes 0 .9518, because we have to round this one up, since we have an eight there, and the units are grams per millimeter.

02:31 C is 8 .687...

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