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3 years ago

Which of the following best demonstrates kinetic energy?

Chemistry

2 answers:

Viktor [21]3 years ago

4 0

It’s b bird in flight!

Novay_Z [31]3 years ago

3 0

Hey there!

Kinetic energy means that something is in motion.

Therefore, the answer would be B. Bird in flight because it’s the only choice that suggests is moving.

Hope this helps!

God bless ❤️

xXxGolferGirlxXx

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How many atoms of S are there?

jonny [76]

Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1 . Because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.

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3 years ago

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Draw all resonance structures for the nitryl fluoride molecule, no2f.

denis-greek [22]

From electronic configuration valence electron of Nitrogen is 5, oxygen 6x2 which 12 since it involve two molecules , that of is frulorine is 7, and that No2F is 24 which is gotten form adding (5,12,7 ).All resonance structure are as follows
F
.. I ..
: O : N :O:

..
OR : F:
I

N .. : F:

/ \ or I

.. .. N

:O :        :O:    / /    \\
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3 years ago

Between 2014 and 2016, more than 25,000 children in Flint, Michigan, drank water that was contaminated with lead from lead pipes

-Dominant- [34]

Answer:

Regularly test the water in residents' homes.

Explanation:

The only way to know if tap water contains lead is to do tests to determine the levels of that metal in the water. Therefore, the state is under an obligation to constantly conduct such tests in the resident´s homes and thus determine whether the water supplied is fit for human consumption.

The state after the tests must guarantee the population the treatment of the water to reduce the levels of lead. The main pipes that contain lead pipes must be changed, as well as those parts of the service connections made of lead.

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2 years ago

When a substance goes from a gas to a liquid, it goes through a ________ change. chemical phase bond nuclear

algol [13]

It goes through a chemical bond

4 0

3 years ago

Read 2 more answers

. how many lone pairs of electrons are present in the lewis structure of calcium sulfide?

miv72 [106K]

Answer:
<u>Four</u>

Explanation:
Calcium Sulfide is an ionic compound made up of Ca²⁺ and S²⁻.
Ca²⁺ is formed as,

Ca → Ca²⁺ + 2 e⁻

These two electrons are accepte by Sulfur as,

S + 2 e⁻ → S²⁻

So, before accepting 2 electrons S was having six valence electrons, after accepting two electrons from Ca it has 8 electrons which are present in four pairs as shown below,

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3 years ago