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Quiz:GeneralH001

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The following questions are multiple choice; clearly circle the answer which you think is the most appropriate. These questions are for self-testing only, and are not suitable for assignments or exams.

1. A block of metal has a mass of 14.0 kg and a volume of 2.0 L. What is the density?

14.0 kg/L
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7.0 kg/L
→ Correct!
2.0 kg/L
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0.5 kg/L
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0.14 kg/L
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2. Ethyl acetate, an organic liquid, has a density of 0.90 kg/L. What is the mass of 2.0 L of ethyl acetate?

0.50 kg
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0.90 kg
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1.0 kg
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1.8 kg
→ Correct!
2.0 kg
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3. A large family car produces 8000 kg of carbon dioxide (CO2) in a year, contributing to global warming. What volume of CO2 is produced? The density of carbon dioxide is 2.0 g/L. (NOTE: grams/L not kilograms.)

0.00025 L
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4000 L
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16000 L
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4000000 L
→ Correct!
16000000 L
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4. A bottle of sulfuric acid has a mass of 3.62 kg and a density of 1.81 kg/L. What is the volume?

0.50 L
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1.0 L
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1.81 L
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2.0 L
→ Correct!
3.62 L
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5. A block of plastic has a mass of 2.72 kg and a volume of 3.13 L. What is the density?

0.869 kg/L
→ Correct!
0.933 kg/L
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1.15 kg/L
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1.37 kg/L
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8.51 kg/L
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6. A sample of helium gas has a volume of 1.37 L. Helium has a density of 0.179 g/L. What is the mass in grams?

0.131 g
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0.245 g
→ Correct!
1.37 g
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4.08 g
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7.65 g
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7. A bottle contains 39.5 g of liquid perfluorooctane (density 1.77 g/mL). What is the volume of the liquid?

0.0448 mL
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10.1 mL
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22.3 mL
→ Correct!
47.0 mL
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69.9 mL
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8. A solid gold royal crown, density 18.4 kg/L, weighs 1.84kg. If the crown were placed into a completely full bathtub of water, what volume of water would be displaced?

1.84 L
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18.4 L
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10 L
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1.0 L
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0.10 L
→ Correct!

9. A batch of crude paracetamol weighed 370 kg when wet with a solvent, ethanol. During the drying process, 100 L ethanol (density 0.79 kg/L) was removed. What mass of dry paracetamol remained?

470 kg
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449 kg
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291 kg
→ Correct!
270 kg
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79 kg
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10. Molten iron metal (density 7.55 kg/L) is flowing out of a furnace, which originally contained 10,000 kg (10 tonnes) metal. So far, the steel workers have collected 40 ingots that are each 25 L in size. Assuming the density of iron stays the same, how many more ingots can they expect to collect?

53
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40
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27
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17
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13
→ Correct!

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