As you have seen in this lab, the density of water is near 1 g/cm3. Anything with a density lower than this will float in water, and anything with a higher density will sink. Imagine you are building a submarine. How could you be sure to have it sink and then rise?

Make sure its density is always above 1.0 g/cm3.

Make sure its density is always below 1.0 g/cm3.

Develop a way to adjust its density so that it can be above and below 1.0 g/cm3.

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Chemistry

11 March, 19:34

As you have seen in this lab, the density of water is near 1 g/cm3. Anything with a density lower than this will float in water, and anything with a higher density will sink. Imagine you are building a submarine. How could you be sure to have it sink and then rise?

Make sure its density is always above 1.0 g/cm3.

Make sure its density is always below 1.0 g/cm3.

Develop a way to adjust its density so that it can be above and below 1.0 g/cm3.

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Answers (1)

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Jaden House · Answer 1

The third answer is the one you want. You have to have an adjustable density. All other things being equal, if the tanks you use for holding just water when filled with water will let the sub sink, because the sub is made of a dense metal like iron or steel.

If on the other hand you fill these tanks with air, the net density will be below one and the sub will rise.