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Charra [1.4K]
3 years ago
9

On Monday while Johnny was getting ready for school, he was in the bathroom holding his comb when he got an itch on his head. Jo

hnny used the comb to rub his itch away and when he did his hair was a mess. He turned on the faucet so there was a small stream of water flowing and as he brought the comb near the water to dampen it, he noticed that the water was pulling towards the comb. Thinking he was seeing things, he pulled the comb back and the water was flowing straight down. He again moved the comb near the stream of water and the water again was pulling towards the comb. He repeated this process many times and the water continued to move towards the comb when the comb was near the water. What do you think is happening to the stream of water flowing from the faucet? Support you claim in Question 1, by explaining why you think it is happening. Formulate your hypothesis for the problem.
Chemistry
2 answers:
Shtirlitz [24]3 years ago
6 0

Answer:

Check Explanation.

Explanation:

This phenomenon is due to static electricity.

When one body is rubbed against another, the surface charges on one are transferred to the other.

So, rubbing the hair with comb rubs off electrons from the surface of the comb onto the hair. Thereby making the overall charges on the comb more positive than negative. (Since every object normally has an equal amount of positive & negative charges and rubbing a particular amount of negative charges off the comb, makes the comb overall positively charged).

Now, the structure of a water molecule has two hydrogen atoms and an oxygen atom. The hydrogen atoms attach to two out of the six valence electrons of each Oxygen atom; leaving 4 electrons to pair off into 2 pairs that are 2 lone pairs. So, basically, each water molecule has two lone pairs of electrons.

So, it seems natural according to the teachings of static electricity that water molecules with 2 lone pairs of electrons, are attracted to a relatively positively charged comb. Hence, the water molecules naturally attract towards the positively charged comb. (Like charges repel, unlike charges attract).

Hope this Helps!!!

balandron [24]3 years ago
5 0
I'd say that his comb has a static electricity charge. It can either be negative, or positive. Let's just say it's positive, and the water is negatively charged. This means that it will affect the water flow when the two charges meet. I hope this helps! ~Mia
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5 0
3 years ago
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Tritium 3 1H decays to 3 2He by beta emission. Find the energy released in the process. Answer in units of keV.
-Dominant- [34]

Answer:

The energy released in the decay process = 18.63 keV

Explanation:

To solve this question, we have to calculate the binding energy of each isotope and then take the difference.

The mass of Tritium = 3.016049 amu.

So,the binding energy of Tritium =  3.016049 *931.494 MeV

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The mass of Helium 3 = 3.016029 amu.

So, the binding energy of Helium 3 = 3.016029 * 931.494 MeV

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7 0
3 years ago
a compound has an empirical formula of CH2 what is the molecular formula if it's molar mass is 252.5 grams/mol
Goryan [66]

Empirical formula is the simplest ratio of components making up the compound. the molecular formula is the actual ratio of components making up the compound.

the empirical formula is CH₂. We can find the mass of CH₂ one empirical unit and have to then find the number of empirical units in the molecular formula.

Mass of one empirical unit - CH₂ - 12 g/mol x 1 + 1 g/mol x 2 = 12 = 14 g

Molar mass of the compound is - 252 .5 g/mol

number of empirical units = molar mass / mass of empirical unit

                                           = \frac{252.5 g/mol}{14 g}

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Therefore molecular formula is - 18 times the empirical formula

molecular formula  - CH₂ x 18 = C₁₈H₃₆                                            

molecular formula is C₁₈H₃₆  

8 0
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Answer:

I know you have been waiting awhile for this question to be answered :)

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Explanation:

Hopefully this helps :D

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