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polet [3.4K]
3 years ago
14

Life vest floats in the water therefore what do you know about the life vests density?

Chemistry
1 answer:
Ymorist [56]3 years ago
8 0

Answer:

their density is only lighter than water because of the air inside. without the air you would sink even if you were holding it firmly.

Explanation:

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The atomic number is the number of _____ an atom
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The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1). In this model it is an essential feature that the photon energy (or frequency) of the electromagnetic radiation emitted (shown) when an electron jumps from one orbital to another, be proportional to the mathematical square of atomic charge (Z2). Experimental measurement by Henry Moseley of this radiation for many elements (from Z = 13 to 92) showed the results as predicted by Bohr. Both the concept of atomic number and the Bohr model were thereby given scientific credence. The atomic number is the number of _z_ an atom.
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A piece of wood near a fire is at 23°C. It gains 1,160 joules of heat from the fire and reaches a temperature of 42°C. The speci
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