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Nat2105 [25]
4 years ago
14

Which element does the electron configuration 1s2 2s2 2p2 represent B C N K

Chemistry
2 answers:
Stella [2.4K]4 years ago
3 0
C 1s²2s²2p²
carbon
__________________________

liberstina [14]4 years ago
3 0

<u>Answer:</u> The given configuration represents carbon atom.

<u>Explanation:</u>

Electronic configuration tells us about the number of electrons that are present in an atom. It also determines the atomic number of an element.

For the given electronic configuration = 1s^22s^22p^2

Total number of electrons = 2 + 2 + 2 = 6

The element which has atomic number '6' is carbon atom.

Hence,  the given configuration represents carbon atom.

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Cube has a mass of 15g and the volume is 30cm what’s its density
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According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction an
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Imagine that Ana has a block made of pure gold. If she cuts this block into two equal pieces, pick the statement that best descr
dimaraw [331]

Answer : The correct statement is:

The density of each piece is the same as that of the original block.

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Intensive property : It is defined as a property of substance which does not change as the amount of substance changes.

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According to question, if Ana has a block made of pure gold and she cuts this block into two equal pieces then the density of each piece is the same as that of the original block because density is an intensive property that does not changes until and unless material is changed.

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Hence, the correct statement is the density of each piece is the same as that of the original block.

6 0
4 years ago
A sample of a gas (1.50 mol) is contained in a 15.0 l cylinder. the temperature is increased from 100 °c to 150 °c. what is the
pav-90 [236]

<u>Given:</u>

Moles of gas, n = 1.50 moles

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Final temperature, T2 = 150 C = (150+273)K = 423 K

<u>To determine:</u>

The pressure ratio

<u>Explanation:</u>

Based on ideal gas law:

PV = nRT

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under constant n and V we have:

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Thus, the ratio of P2/P1 = 1.13

Ans: The pressure ratio is 1.13


7 0
3 years ago
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