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Alexeev081 [22]
3 years ago
8

Help please !!!

Chemistry
1 answer:
shepuryov [24]3 years ago
5 0

Answer: 3. Kinetic energy of the hands heats up the air.

Explanation: My explanation might be a little dumb. When you're cold you will put your hands together and rub really fast to create heat. When you clap your hands the same thing is happening. I hope this helps!

Let me know if I'm wrong, have a good day!

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For ethanol, propanol, and n-butanol the boiling points, surface tensions, and viscosities all increase. what is the reason for
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Moving from Ethanol through Propanol to Butanol the physical properties like boiling points, surface tension and viscosity increases because of the increases in intermolecular interactions between the molecules of given compounds.

Explanation:
                   Ethanol, propanol and butanol all have hydroxyl groups in common, means all have hydrogen bond intractions between their molecules. So, taking the hydrogen bonding interaction constant we are left with only the difference in the number of carbon atoms.
                    Butanol has the greatest physical properties than other two because it has four carbon atom chain. So, as we know the London Dispersion forces or Van der Waal forces increases with increase in molecular size and chain length of hydrocarbon.
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Answer:

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