UCLA Measurements Lab

Consider the following set of measurements.

10.56 g

10.55 g

10.51 g

10.52 g

10.50 g

10.52 g

(3pts)

a. Calculate the average value of the measurements.

(1pts)

Choose the unit for the average value of the measurements

Choose…mg,kg,cm,°F,mL,°C,L

(6pts)

Upload your work calculating the average here.

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(3pts)

b. Determine the average absolute deviation of the measurements by using the average value determined in part a.

(1pts)

Choose the unit for the average absolute deviation of the measurements

Choose…mg,kg,cm,°F,mL,°C,L(6pts)

Upload your work for the average absolute deviation here.

Browse your files to uploador Drag and DropMax attachments: 5 | Max Size: 20.00MB each(3pts)

c. Assume that the reference value of the mass is 10.48 g. Determine the percent error of the average value determined in part a.

Upload your work calculating the percent error here.

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Data Entry

Part A: Basic

Measurement

For each entry, enter the numerical value in the ‘Measurement’ column and then select the unit in the ‘

Units

‘ column.

MeasurementUnits

Length of a test tube

Choose…mg,kg,cm,°F,mL,°C,L

Temperature of water

Choose…mg,kg,cm,°F,mL,°C,L

Mass of 1 tablespoon of salt

Choose…mg,kg,cm,°F,mL,°C,L

Part B: Density

Density of Chocolate

For each entry, enter the numerical value in the ‘Measurement’ column and then select the unit in the ‘Units’ column.

MeasurementUnits

Mass of chocolate sample

Choose…mg,kg,cm,°F,mL,°C,L

Volume of water before chocolate is placed in water

Choose…mgkgcm°FmL°CL

Volume (water + chocolate) after chocolate is placed in water

Choose…mgkgcm°FmL°CL

Estimating the thickness of aluminum foil

For each entry, enter the numerical value in the ‘Measurement’ column and then select the unit in the ‘Units’ column.MeasurementUnits

Length of the aluminum square

Choose…mg,kg,cm°FmL°CL

Width of the aluminum square

Choose…mg,kg,cm,°F,mL,°C,L

Mass of the aluminum square

Choose…mg,kg,cm,°F,mL,°C,L

Part C: Determine the Accuracy and Precision of the Syringe

(0.5pts)

Temperature of the water – Measurement (Do not enter units here!)

(0.5pts)

Temperature of the water – Unit

Choose…mg,kg,cm,°F,mL,°C,L

Mass Trials of 10.0 mL of Water Dispensed from Syring

For each entry, enter the numerical value in the ‘Measurement’ column and then select the unit in the ‘Units’ column.

Volume of water – Measurement

Volume of water – Units

Mass of water – Measurement

Mass of water – Units

Sample 1

Choose…mg,kg,cm,°F,mL,°C,LChoose…mg,kg,cm,°F,mL,°C,L

Sample 2

Choose…mg,kg,cm,°F,mL,°C,LChoose…mg,kg,cm,°F,mL,°C,L

Sample 3

Choose…mg,kg,cm,°F,mL,°C,LChoose…mg,kg,cm,°F,mL,°C,L