Measurement and Significant Figures Experiment Report 2022

LAB REPORT 1
MEASUREMENT AND SIGNIFICANT FIGURES EXPERIMENT
By Name
Course
Instructor
Institution
Location
Date: 25/03/2020

LAB REPORT 2
Objectives:
i. To read scale correctly and report the measurements with precise
significant figures.
ii. To learn how to report precise significant figures in calculation results
involving measurements.
iii. To assess precision and accuracy in measurements by comparing of
measured value and true value.
iv. To represent determined data by use of graphs.
Requirements
i. Distilled water
ii. Analytical balance
iii. Dropper
iv. Alcohol
v. 10 mL pipet
vi. 50 mL Graduated Cylinder
vii. 50 mL Beaker
viii. 150 mL Beaker
ix. 25 mL Graduated Cylinder
Procedure
1st Part: Density of water
i. 50mL dry and clean graduated cylinder was weighed on balance and its
mass recorded1.
1 Pedhazur, Elazar J., and Liora Pedhazur Schmelkin. Measurement, design, and
analysis

LAB REPORT 3
ii. 10mL distilled water was added into a cylinder .9mL was first added to the
cylinder and the remaining was added by use of a dropper up to the mark.
iii. Cylinder with 10mL of water was weighed and its mass recorded.
iv. Using the same 2nd step procedure, water was added to 30.0mL mark.
The cylinder with 30.0mL of water is weighed and its mass recorded.
v. Using the same method 2 and 4, the water was added to 50.0 mark then
weighed and mass recorded.
vi. Mass of water was calculated by getting the difference in mass between
the empty cylinder from10.0 mL, 30 mL and 50.0 mL cylinders.
vii. Density of water is determined by use of the formulaD= m
v .
2nd Part: Precision and Accuracy of volumetric devices.
i. 100mL of distilled water was poured into 150mL beaker .Water
temperature was recorded using alcohol thermometer.
ii. 50mL beaker was weighed using analytical balance and mass recorded.
iii. 10.0mL distilled water was measured by use of 25mL graduated cylinder
(using the same procedure used in part 1 above) and then added into 50mL
beaker.
iv. 10mL (with water) beaker was weighed and mass recorded.
v. Mass of distilled water was calculated by getting the difference between
masses of 50mL empty beaker from mass of beaker with 10ml of water.
vi. The steps(ii−v ) were repeated 2 more times to find multiple data (trials).