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Measuring the Density of a Substance

Autor:   •  March 12, 2018  •  865 Words (4 Pages)  •  39 Views

Page 1 of 4

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- 44.6

= 24.9g

32 mL

D = M / V

= 24.9 / 32

= 0.77g/mL

Rubbing alcohol

Water

-clear

-odorless

-transparent

75.7 - 44.6

= 31.1g

32mL

D = M / V

= 31.1 / 32

= 0.97 g/mL

Water

Rubber stopper

-small

-light

-rubbery

8.1g

39 - 32mL

= 7mL

D = M/V

= 8.1 / 7

= 1.15 g/mL

Acrylic

Calculations:

To calculate the volume of the rectangular prism

G - L=5 cm W=4 cm H=3cm

Volume = ?

R - The volume of the rectangular prism.

A - 1. The formula for volume of a rectangular prism is LxWxH.

2. Calculate with the given dimensions.

S - V = LxWxH

= 5 x 4 x 3

= 60cm³

P - Therefore, the volume of the rectangular prism is 60cm³.

To calculate the density of the rectangular prism

G - Mass = 160 g

Volume = 60cm³

Density = ?

R - The density of the rectangular prism.

A - 1. The formula for density is Mass/Volume

2. Calculate with the given information.

S - D = M/V .

= 160g / 60cm³

= 2.67 g/cm³

P - Therefore, the density of the rectangular prism is 2.67g/cm³

To calculate the volume of the cylinder

G - Radius = 0.85 cm

Height = 3.3 cm

Volume = ?

R - The volume of the cylinder.

A - 1. The formula for volume of a cylinder is πr²h.

2. Calculate with the given dimensions.

S - V = πr²h

= =π(0.85)²(3.3)

= 7.5cm³

P - Therefore, the volume of the cylinder is 7.5cm³.

To calculate the density of the cylinder

G - Mass = 69.8 g

Volume = 7.5 cm³

Density = ?

R - The volume of the cylinder.

A - 1. The formula for density is Mass/Volume

2. Calculate with the given information.

S - D = M/V .

= 69.8g / 7.5 cm³

= 2.67g/cm³

P - Therefore, the density of the cylinder is 2.67g/cm³

Conclusions: The purpose of this experiment was to measure the density of different substances and identify the substance. After conducting this experiment, I found out that if the mass increases and the volume stays constant, then the density will be increased. Therefore this did verify my hypothesis.

Sources of Error: During this experiment there could’ve been errors involving the mass and/or volume on how it may not been measured completely accurate. Another error was that some of the densities of each substance didn’t fit with the ones in the chart, so they were rounded to the nearest density

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