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defon
3 years ago
14

A chemist is identifying the elements present in a sample of seawater. What characteristic of an element's atoms always determin

es the element's identity?
Group of answer choices (Could someone help me? I am kind of confused) Thank you so much

A. The number of valence electrons

B. The location of valence electrons

C. The number of neutrons

D. The number of protons
Chemistry
1 answer:
eduard3 years ago
3 0
B explanation explanation point
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Which of the following is an important application of hydrogen bonding?
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Holding of DNA together

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What are to long term impacts that the concept of matter cannot be destroyed or created
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As long as matter cannot be destroyed or created , nothing can be gained or lost.

there is zero impact and hence one cannot numerate the impact
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3 years ago
7.7 cm<br> 9.8 cm<br> 0.00<br> 0.162 m
eimsori [14]

Answer:

Volume = 1222.5cm³

Explanation:

<em>If the question is about the volume of the rectangle:</em>

The volume of a rectangle is obtained by the multiplication of its 3 dimensions: Length, width, height.

In the problem, the length of the rectangle is 0.162m = 16.2cm

The width is 7.7cm

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3 years ago
HEEELP PLEASE HELP ASAP WILL AWARD BRAINLIEST What is the IUPAC name for this compound?
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Answer:

The Correct IUPAC name is H3C - CH (CH3) - CH (C2H5) - (CH2)2 - CH3 Class 11

Explanation:

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2 years ago
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Question: Draw a valid Lewis structure for the molecule CH3NO in which there are no nonzero formal charges on any of the atoms.
iVinArrow [24]

The mentioned molecule with formula, CH₃NO where no bond is found between N and O can be depicted as formamide is shown in the attachment below.  

The formal charges = Number of valence electrons for the atom (V) - the number of electrons in lone pairs (N) - 1/2 (number of electrons in bond pairs, B)

FC = V - N - B/2

Thus, there is a need to calculate valence electrons, electrons in lone pairs, and the number of electrons in bond pairs for each atom in the mentioned molecule.  

V or valence electrons on C = 4e, on H = 1e, on N = 5e, and on O = 6e.  

N or electrons in lone pairs on C = 0e, on H = 0e, on N = 2e, and on O = 4e.  

B or number of electrons in bond pairs for C = 8e, for H = 2e, for N = 6e, and for O = 4e.  

Thus, the formal charges for each will be,  

C = 4 - 0 - (8/2) = 0

H = 1 - 0 - (2/2) = 0

N = 5 - 2 - (6/2) = 0

O = 6 - 4 - (4/2) = 0

Lewis dot structure for the given molecule is given in the attachment below:


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3 years ago
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