For Any Calculations That Are Required You Must Show Your Work to Receive Credit

Density Problems

For any calculations that are required you must show your work to receive credit.

1.  How does density vary with temperature? Explain.

2.  Would the density of a person be the same on the surface of the Earth and on the surface of the moon? Explain.

3.  Three balloons filled with neon, carbon dioxide, and hydrogen are released into the atmosphere. Using the data in table 3.6 on page 90 of the red text book, describe the movement of each balloon when released.

4.  A plastic ball with a volume of 19.7 cm3 has a mass of 15.8 g. Would this ball sink or float in a container of gasoline? How can you tell?

For questions 5 and 6 use the materials on the counter in the classroom to make the necessary measurements.

5.  Make the necessary measurements to determine the volume of aluminum used to make an aluminum soda can.

6.  Determine the mass, in grams, of one drop of water. One way to do this is to measure 20 -30 drops and get the average.

a.  What is the average mass of a single drop of water in milligrams?

b.  The density of water is 1.00 g/cm3. Calculate the volume of a single drop of water in cm3? What is the volume of a drop of water in µL?

c.  What is the density of water in the units of mg/cm3?

7.  What is the volume in cubic centimeters, of a sample of cough syrup that has a mass of 50.0g? The density of cough syrup is 0.950 g/cm3.

8.  What is the mass in kilograms, of 14.0 L of gasoline? (Assume the density of gasoline is 0.680 g/cm3.)

Bonus:

The sun is estimated to have a mass of 2 x 1036 kg. Assuming it to be a sphere of average radius of 6.96 x 105 kilometers, calculate the average density of the sun in the units of g/cm3.