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What is the density of a 700 kg object with a volume of 649 m^3? (Use d = m / v.)
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1. Intro to General Chemistry
Density
Scelta multipla
Vegetable oil has a density of 0.92 g/cm^3. Which of the following substances would float on vegetable oil?
A
Ice (density = 0.92 g/cm^3)
B
Aluminum (density = 2.70 g/cm^3)
C
Water (density = 1.00 g/cm^3)
D
Ethanol (density = 0.79 g/cm^3)
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Understand the principle of floating: A substance will float on a liquid if its density is less than the density of that liquid.
Identify the density of the vegetable oil, which is given as \(0.92\ \text{g/cm}^3\).
Compare the densities of the given substances to the density of vegetable oil:
- Ice has a density of \(0.92\ \text{g/cm}^3\), which is equal to vegetable oil, so it will neither clearly float nor sink easily.
- Aluminum has a density of \(2.70\ \text{g/cm}^3\), which is much greater than vegetable oil, so it will sink.
- Water has a density of \(1.00\ \text{g/cm}^3\), which is greater than vegetable oil, so it will sink.
- Ethanol has a density of \(0.79\ \text{g/cm}^3\), which is less than vegetable oil, so it will float.
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