# Exp 2 Manuel Ordaz 0000 1 2 Essay

Submitted By astromanuel
Words: 1744
Pages: 7

Name: Manuel Ordaz
Date:07/17/15
Exp 2: Laboratory Techniques & Measurements
Lab Section: 2

Data Tables:

Length Measurements

Object Measured
Length in cm
Length in mm
Length in m
Magnet
2.5 cm
25 mm
.025 m
Bolt
2.9 cm
29 mm
.029 m
Glass Rod
15.0 cm
150 mm
.15 m

Warm Temperature Measurements

Hot tap water temperature _59___˚C __138.2__˚F _332.15___K
Boiling water temperature at 5 min _87___˚C __188.6__˚F __360.15__K

Cold Temperature Measurements

Cold tap water temperature __29__˚C ___84.2_˚F __302.15__K
Ice water temperature at 5 minutes ___1_˚C ___33.8_˚F ___274.15_K

Mass Measurements

Object Measured
Mass in g
Mass in kg
Magnet
4.0 g
.004 kg
Bolt
8.1 g
.0081 kg
Glass Rod
11.9 g
.0119 kg

Volume Measurements and Density Measurements with liquids

Water:
Mass of empty graduated cylinder __16.2__g
Volume of water in graduated cylinder __20__mL
Mass of graduated cylinder and water __35.8__g
Net mass of the water __19.6__g
Density of the water ___.98_ g/mL
Percent error ___.02_%

Massage Bath Oil:
Mass of empty graduated cylinder __16.2__g
Volume of Massage Bath Oil in graduated cylinder ___5_mL
Mass of graduated cylinder and Massage Bath Oil __21.5__g
Net mass of the Massage Bath Oil _5.3___g
Density of the Massage Bath Oil __1.06__ g/mL
Percent error __.06__%

Volume Measurements and Density Measurements with solids

Mass of magnet __4.0__g
Length of magnet __2.5__cm
Width of magnet __.05__ cm
Height of magnet ___.05_cm
Calculated Volume of magnet ___.00625_cc
Density of the magnet ___640_ g/cc

Water Displacement and Density Measurements

Magnet:
Mass of magnet __4.0__g
Volume of water in graduated cylinder __20__mL
Volume of water and magnet in graduated cylinder ___22_mL
Volume of magnet (subtract the two volumes) __2__mL
Density of the magnet ___2_ g/mL

Bolt:
Mass of bolt ___8.1_g
Volume of water in graduated cylinder ___20_mL
Volume of water and bolt in graduated cylinder __22__mL
Volume of bolt (subtract the two volumes) ___2_mL
Density of the bolt __4.05__ g/mL

Archimedes’ Method
Bolt:
Mass of bolt __8.1__g
Mass of Displaced Water (water used 60g rose to 61.1) _1.1__g
Calculated Volume of Displaced Water ___1.1_mL
Density of the bolt ___7.4_ g/mL

Magnet:
Mass of magnet __4.0__g
Mass of Displaced Water(water used 35g and rose to 35.8) ___.8_g
Calculated Volume of Displaced Water __8__mL
Density of the magnet ___.5_ g/mL

Density of Sugar Solution

Net mass of the original sugar solution __1.1__g
Volume of the original sugar solution ___1.1_mL
Density of the original sugar solution ___1_ g/mL

Net mass of the diluted sugar solution (used 20ml of H20) __20.2__g
Volume of the diluted sugar solution ___20.2_mL
Density of the diluted sugar solution __1__ g/mL

Conclusion:

The predominant objective of the experiment Laboratory Techniques and Measurements was for me to get introduced to the world of using laboratory equipment so that I could be familiar with the proper techniques one should use when doing an experiment. Also this experiment is intended for me to get comfortable with measuring different objects like a magnet, bolt, and a glass rod using a ruler. Having read the Helpful Hints and Modified Procedures it reminded me to always record my answers with all the marks and one estimated digit when measuring in cm. Not only that, I had the ability to measure out temperature using a thermometer. Thankfully I work in a compounding pharmacy where I measure out chemicals and check the temperature of certain compounds. Knowing that knowledge it helped me tremendously calculate the necessary temperature of the hot boiling water and the ice cold water. One thing that refreshed my mind was from reading the Helpful Hints and Modified Procedures about waiting five minutes to calculate the temperature of the boiling