1. A 5.04 mL sample of Cu has a mass of 45 grams. What is the density of Cu? Show units in final answer
and show work.
2. What an equality for the density found in question 1.
3. Write two conversion factors for the equality in question 2
4. When you are choosing a conversion factor to use in a problem, how do you know which one to multiply
by?
5. Circle the conversion factor you would use (from #3) to convert 2.1 mL of Cu to grams of Cu.
6. How many grams of Cu are in 2.1 mL of Cu?
7. Write the conversion factor (from #3) you would use to convert 14.3 grams of Cu to mL of Cu.
8. How many mL of Cu are in 14.2 grams of Cu?
9. Silicon has a density of 2.33g/cm^3. If you have 74.0cm^3 sample of silicon, what would be its mass in
kg?
Answers: 3
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