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| First Name
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Last Name
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| e-mail
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Book Number
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| What science classes have you
taken? (check all that you have
taken)
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| 1. What volume of a liquid having a density of
1.48 g/cm3 is needed to supply 5.00 grams of the liquid?
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2. The
density of aluminum is 2.70 g/cm3. If a cube of aluminum
weighs 13.5 grams, what is the length of the edge of the cube?
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3. The
number, three hundred fifty thousand, written in scientific notation
is best written as
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4.
Of the masses 86.30 g, 0.0863 kg and 8.630 x 105 mg,
which (if any) is the largest?
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5. The following data was
collected for an experiment with the buret:
mass of flask: 21.45 g;
initial volume reading: 10.09 mL
final volume reading: 21.42 mL
mass of flask + water: 31.67 g
Calculate
a. the mass of water
b. the volume of water
c. the density of water
d. the per cent error (if the correct density is .993 g/mL)
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6. A cube of
side length 8.00 cm has a mass of 200 g. What is its density? |
| 7. What is the volume of 82.2 g of .786
g/mL liquid?
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8.
The
environmental devastation caused by an "oil spill" is not new to the
public. Given that the density of petroleum‑based oil is
approximately 0.9g/ml and the density of water is 1.0g/ml, discuss
the implications this has for aquatic life, possible oil fires, and
clean‑up operations.
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9. A letter has arrived for you that
reads as follows:
Dear Cousin,
How are you? I hear you are taking AP Chemistry now. Maybe you can
help me. I have been working in our mine and recently found a
brilliant stone that looks like a diamond, but I am not sure. Do you
know how I could determine its density? I read in a mineralogy
magazine that diamond has a density of 3.51g/cm3. Please
describe how I can determine the density of this stone, including
the tools I need to buy, the measurement I need to make, and the
necessary calculations. I hope you are enjoying your chemistry
class.
Sincerely, Cousin Emma
Write a letter to Cousin Emma.
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10. The particle diagrams below, which show atoms
and/or molecules in three different samples of matter at STP.
Which sample represents a pure substance?
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