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MatroZZZ [7]
2 years ago
12

Through which material do sound waves tend to move fastest

Chemistry
2 answers:
den301095 [7]2 years ago
6 0

Answer:

The answer would be B. Metal

Explanation:

Sound travels the fastest in solids

ira [324]2 years ago
3 0

Answer:

METAL

Explanation:

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Is cutting your nails a physical or chemical change
Temka [501]
Cutting of Nails is a Physical Change since no new substance is formed.
Don't confuse it with Reversible and Irreversible Changes
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2 years ago
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Refer to the periodic table tool and write the electron configurations of the following elements in both long and short terms
ahrayia [7]

Answer:-

Carbon

[He] 2s2 2p2

1s2 2s2 2p2.

potassium

[Ar] 4s1.

1s2 2s2 2p6 3s2 3p6 4s1

Explanation:-

For writing the short form of the electronic configuration we look for the nearest noble gas with atomic number less than the element in question. We subtract the atomic number of that noble gas from the atomic number of the element in question.

The extra electrons we then assign normally starting with using the row after the noble gas ends. We write the name of that noble gas in [brackets] and then write the electronic configuration.

For carbon with Z = 6 the nearest noble gas is Helium. It has the atomic number 2. Subtracting 6 – 2 we get 4 electrons. Helium lies in 1st row. Starting with 2, we get 2s2 2p2.

So the short term electronic configuration is [He] 2s2 2p2

Similarly, for potassium with Z = 19 the nearest noble gas is Argon. It has the atomic number 18. Subtracting 19-18 we get 1 electron. Argon lies in 3rd row. Starting with 4, we get 4s1.

So the short electronic configuration is [Ar] 4s1.

For long term electronic configuration we must write the electronic configuration of the noble gas as well.

So for Carbon it is 1s2 2s2 2p2.

For potassium it is 1s2 2s2 2p6 3s2 3p6 4s1

5 0
2 years ago
5. A fireplace fire heating a room on a cold day is an example of what type of heat
Inessa [10]

Answer:

I think the answer is C- radiation

Explanation:

If its not C its A Hope this helps forgive me if i'm wrong :/

8 0
2 years ago
Which equation is most likely used to determine the acceleration from velocity vs. time graph?
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\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Acceleration.

a = V2-V1/t

so the correct answer is, a = ∆v/t

option C.) is correct, a = ∆v/t

5 0
2 years ago
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True or false: if a compound contains ions then both positive and negative ions must be present.
Masteriza [31]
This is false, a compound does not have to contain both cations and anions if ions are present.
3 0
2 years ago
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