Me paper clips are not dense than water. however, its possible to make them float. what property of water allows this? how does this property relate to the molecular structure of water?
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Ответ:
The high surface tension helps the paper clip - with much higher density - float on the water. The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
Basically it means that there is a sort of skin on the surface of water where the water molecules hold on tight together. If the conditions are right, they can hold tight enough to support your paper clip. The paperclip is not truly floating, it is being held up by the surface tension.
Ответ:
The high surface tension helps the paper clip - with much higher density - float on the water. The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
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Ответ:
D) Methane CH4
Explanation:
Hello,
In this case, among the options, assuming for all the fuels a mass of 100 g, the combustion reaction reaction and stoichiometry for carbon dioxide is shown below:
A) Benzene C6H6
B) Cyclohexane C6H12
C) Glucose C6H12O6
D) Methane CH4
Therefore, for equal masses D) Methane CH4 yield the greatest mass of carbon dioxide.
Regards.