Practical — Chem Lab 1 (Determination of Composition of an Alloy) / Chem Lab 1 Practical / 2025 Update / Study Guide & Lab Report Help / Score 100%

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Practical - Chem lab 1- determination of composition of an
alloy
Principles of Chemistry (University of Ottawa)




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Laboratory Report Form
Experiment 1
Determination of the Composition of an Alloy

Data Tables
Table 1: Pure Metal



Data Trial 1 Trial 2

Identity of Metal Magnesium (Mg) Magnesium (Mg)

Mass of metal (g) 0.0285g 0.0203g

Uncalibrated volume of Calibrated Calibrated
eudiometer (mL)

Volume of hydrogen gas (mL) 30.1mL 21.5mL

Height of water column (cm) 21.5cm 31.2cm

Density of water (kg/m3​​ ) 1000kg/m3​ 1000kg/m3​

Acceleration due to gravity (m/s2​​ ) 9.81 9.81

Pressure of water column (Pa) ​ Pa
2.1x10-3​ ​
3.1x10-3
(2109.15) (3060.72)

Water Temperature (​°C) 20​°C 21​°C

Water Vapour pressure (Pa) 2333Pa 2478.2952Pa

Atmospheric Pressure (Torr) 101400Pa 101400Pa
(760.56)

Pressure of Hydrogen 96957.85Pa 96006.28Pa

Room Temperature 20.2​°C 20.2​°C

Ideal Gas Constant, R 8.3145m3​​ Pa K-1​​ mol 8.3145m3​​ Pa K-1​​ mol

Actual Moles of Hydrogen (mol) 0.001197 mol 0.0008444

Theoretical moles of Hydrogen ​
1.17x10-3 ​
8.35x10-4
(mol)

Percent Yield (%) 102.3% 101.1%


Observations (part 1): During the experiment, when the Magnesium reacted with the Hydrochloric acid (aq),




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