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White raven [17]
3 years ago
12

Rubbing alcohol evaporates from your hand quickly, leaving a cooling effect on your skin. Because evaporation is an example of a

physical property, how do the molecules of gas compare to the molecules as a liquid?
Chemistry
1 answer:
Helga [31]3 years ago
6 0
They both evoporate and leave the cooling and refreshing feeling

hope this helped
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The radius of a krypton atom is 110pm and it's mass is 1.39x10 to -22 g.
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Answer:

24.9~g/cm^3

Explanation:

Density is found dividing mass by volume. In this case, we treat krypton as a sphere having a volume of V = \dfrac{4}{3}\pi r^3. Given:

m = 1.39\cdot 10^{-22}~g

r = 110 pm = 1.10\cdot 10^{-8}~cm

We obtain density of:

d = \dfrac{m}{V} = \dfrac{m}{\dfrac{4}{3}\pi r^3} = \dfrac{3m}{4\pi r^3}

d = \dfrac{3\cdot 1.39\cdot 10^{-22}~g}{4\pi\cdot (1.10\cdot 10^{-8}~cm)^3} = 24.9~g/cm^3

This is not a feasible value for a gas like krypton, its radius is actually not 110 pm.

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In north water, they contribute 91% of the total phytoplankton cells thus acting as an important producer in the area. This contributes to the production of oxygen in north water. Total phytoplankton contributes to half of the oxygen production of Earth.

In this way, chaetoceros contribute to global atmospheric oxygen and carbon dioxide levels.


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