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# Density of Alcohol Lab

Extracts from this document...

Introduction

Emre Çobanoğlu 11-G

Density of Ispirto

AIM

The aim of this experiment is to determine the density of ispirto.

INTRODUCTION

Density is the concentration of mass in something. Often the material is homogeneous so its density is unique to that material.

Density is defined by:

Density=mass/volume

Density=> kg m-3 and g ml

Mass=> kilograms (kg) and grams (g)

Volume=> milliliter (ml) =centimeter cube (cm3) and meter cube (m3)

The SI unit for the final result is kg m-3.

If we can measure the masses and volumes of ispirto, we can draw a graph of mass vs volume and its slope should be its density.

The independent variable is volume and the dependent variable is mass.

The controlled variable is the mass.

INSTRUCTIONS

In this experiment the masses and volumes of ispirto will be measured.

Middle

4

94.8

40

5

102.8

50

6

110.4

60

7

117.8

70

8

125.7

80

9

133.6

90

10

141.1

100

11

147.7

110

12

154.0

120

Mass of the beaker = 65.1 +- 0.1 g

Processed Data

 Trial# Mass (g) +- 0.1Ispirto

Conclusion

IMPROVING THE INVESTIGATION

The beam balance should be oiled really well in order to decrease the friction to minimum and the results will be more precise and this will also decrease the systematic errors. If we were using one beaker the amount of lost ispirto during transferring would be decreased, so the results would be more accurate. If we have an eyedropper we can be more precise about the value on the graduated cylinder. Instead of looking the value on the graduated cylinder with eye, a laser pointer could be used. In order to decrease the effect of random errors more number of trials should be made. There could be a time limit for each trial, so the amount of ispirto lost into air would be less.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

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