Density of Unknown Liquid using Graduated Cylinder Measurements
Answers
Explanation:
Problem: You are given two unknown liquids. Find the density of each.
Materials: 100ml graduated cylinder, triple beam balance, calculator, 2 unknown liquids.
Procedure: 1) Find the mass of the empty graduated cylinder.
2) Pour unknown liquid #1 into the graduated cylinder to the 50 ml. level.
3) Find the mass of the graduated cylinder with 50ml of unknown liquid #1.
4) Repeat steps 1-3 for unknown liquid #2.
We can calculate density of a each liquid using the formula:
Density= Mass/Volume
where mass is that for just the liquid (you must subtract out the mass of the graduated cylinder).
Now let's calculate the densities of the two liquids using the following given data.
Liquid #1:
Given: Mass of empty graduated cylinder = 78 grams
Mass of graduated cylinder with unknown liquid #1= 128 grams.
Find:
a) Mass of just the liquid = ____
b) Volume of liquid=_____
c) Density of liquid #1 =____
Liquid #2:
Given: Mass of empty graduated cylinder = 78 grams
Mass of graduated cylinder with unknown liquid #2= 117.5 grams.
Find:
a) Mass of just the liquid = ____
b) Volume of liquid =_____
c) Density of liquid #2=____
Today they will practice measuring different liquids. They will use a container called a graduated cylinder to measure liquids. Graduated cylinders have numbers on the side that help you determine the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).