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11Alexandr11 [23.1K]
3 years ago
8

Ice usually forms on the top part of lakes not the bottom , the reason for this occurence is?​

Chemistry
1 answer:
Bingel [31]3 years ago
5 0

Answer:

Ice is less dense than water because of the way it forms a hexagonal crystalline structure. Each water molecule consists of two hydrogen atoms bonded to the bottom of an oxygen atom. ... In the winter, temperatures in a lake get close enough to freezing that the colder water is less dense and floats to the top

Explanation:

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<em></em>

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mass of the star m =  2.0 x 10^36 kg

radius of the star (assumed to be spherical) r = 7.0 x 10^5 km = 7.0 x 10^8 m

The density of substance ρ = mass/volume

The volume of the star = volume of a sphere = \frac{4}{3}\pi  r^{3}

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