Lab Report 1 PDF

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Lab 1 – CEM131 Density and Graphing Name: __________________________________________________________________________________________

Density of a Rectangular Solid Length

_______ cm

Height

_______ cm

Width

_______ cm

Mass

_______ g

Volume of Water

_______ mL

Mass of Cylinder + Water

_______ g

Mass of Cylinder

_______ g

Mass of Water

_______ g

Density of Water

Density of a Nonaqueous Liquid Liquid Used: Ethanol

Trial

1

2

3

4

Mass of Cylinder

Mass of Empty

with Liquid (g)

Cylinder (g)

Mass of Liquid (g)

Volume (mL)

Calculations Show all calculations. Include all units. Round all calculated values to the allowed significant figures. Box numerical answers.

Density of a Rectangular Solid 1.

Calculate the Volume of the rectangular solid in cm3. Use the standard formula for volume of a rectangular solid and be sure to account for significant figures in the calculations.

2.

Calculate the Density of the rectangular solid using the volume calculated in #1 and the mass determined in the lab.

3.

Convert the length, width, and height of the rectangular solid into inches. (2.54 cm = 1 in.) Show each conversion using dimensional analysis.

4.

Convert the mass of the solid from grams to ounces (28.4 g = 1 oz.). Show the conversion using dimensional analysis.

5.

Calculate the volume of the rectangular solid in cubic inches, using the converted length width and height from #3.

6.

Calculate the density of the rectangular solid in ounces per cubic inch, using the converted volume from #5 and

the converted mass from #4.

Density of Water 1.

Calculate the density of the water in g/mL.

2.

How does your calculated density compare to the known density of water (1.00 g/mL), where do you think any error crept in from?

Density of a Nonaqueous Liquid 1.

On the attached graph paper, plot the mass on the vertical axis and the volume on the horizontal axis.

2.

Trace the best-fit straight line through the data points.

3.

Choose two points on the line, label these points as Point 1 and Point 2, and record their values below (be sure to include proper units. (IMPORTANT: Point 1 should have the lower mass and volume values):

4.

mass #1

_____

mass #2

_____

volume #1

_____

volume #2

_____

Calculate the slope of the line from the formula below. The slope of the line is the density of the liquid.

Slope=

Rise Run

∆ mass m 2−m 1 = = v 2−v 1 ∆ volume

NAME:

LAB:

NAME:

LAB:...