SCI 121 RCC Density of Liquids Lab Report
Sci121 LAB2 REPORT SHEETProfessor Dong Ma
A. Density of Liquids
A.1. Density of Water
1. Volume (mL)
20
2. Mass of beaker (g)
28.3
3. Mass of beaker + liquid
48.1g
4. Mass of liquid
5. Density
6.
(Show calculations) D =
m
=
V
A.2. Density of an Unknown Liquid
1. Type of liquid sample
Salt water
Volume of liquid
20 mL
2. Mass of beaker 27.5 g
3. Mass of beaker + liquid 49.2 g
4. Mass of liquid
5. Density
(Show calculations)
D=
B. Specific Gravity
m
=
V
1. Specific gravity of water 1.009 g/cm3 density of water sample
2. Specific gravity of liquid sample
1.0595 g/cm3
3. Specific gravity of water using a hydrometer
4. Specific gravity of liquid using a hydrometer
Show math of how to calculate specific gravity of line 3 and 4 for water and the
liquid sample?
C. Density of Solids
1. Mass of the solid
13.2 grams
2. Initial water level
20 mL
3. Final water level with solid
21.5mL
4. Volume of solid (3 − 2)
5. Density of the solid
g/mL
(Show calculations)
6. Type of metal
Copper
Mass (2) − Mass (1)
7. Density of the metal =
=
Volume (2) − Volume (1)
g/mL
Questions and Problems
Q1 A metal object has a mass of 8.37 g. When it was placed in a
graduated cylinder containing 20.0 mL of water, the water level
rose to 23.1 mL. What is the density and identity of the metal?
(see Table 3.1)
Q2 What is the mass of a solution that has a density of 0.775 g/mL and
a volume of
50.0 mL?
