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jeka57 [31]
3 years ago
10

Explain how to determine the number of neutrons an

Chemistry
2 answers:
oee [108]3 years ago
5 0
To find the neutrons you add the mass number and the atomic number for neutrons


Hope this helps


-Zayn Malik
Viktor [21]3 years ago
5 0

Answer:

mass number - atomic number

Explanation:

mass number = number of proton + number of neutron

atomic number = number of proton

<em />

<em />

<em>hope it helps</em>

<em />

<em />

<em>please mark as brainliest</em>

<em>Darrell cares</em>

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Which of the following atoms or ions does not have a filled outer subshell?CaSZn2+S2Ca2+
ipn [44]

S and S²⁻ do not have the outer subshell fully filled with electrons.

Explanation:

We look at electronic configurations:

Ca   1s² 2s² 2p⁶ 3s² 3p⁶ 4s² - the outer subshell 4s² is fully-filled with electrons

S      1s² 2s² 2p⁶ 3s² 3p⁴ - the outer subshell 3p⁴ is not fully-filled with electrons

Zn²⁺  1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s⁰ - here the 4s subshell is higher in energy than 3d subshell so will consider 3d¹⁰ the out subshell which is fully-filled with electrons

S²⁻  1s² 2s² 2p⁶ 3s² 3p² - the outer subshell 3p² is not fully-filled with electrons

Ca²⁺ 1s² 2s² 2p⁶ 3s² 3p⁶ - the outer subshell 3p⁶ is fully-filled with electrons

Learn more about:

electron configurations

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4 0
3 years ago
(a) The 1H NMR spectrum of DMF exhibits three signals. Upon treatment with excess LAH followed by water, DMF is converted into a
AURORKA [14]

Answer:

Explanation:

check below for the solution

4 0
3 years ago
 Some
Misha Larkins [42]
<span>density is defined as mass per volume.. so 94 mL makes no sense.</span>
7 0
3 years ago
Which of the following is made of matter<br><br> A. table B. tree C. pencil D. All of the above
dybincka [34]

Answer:

The answer is D) all of the above

Explanation:

This is because if something has mass then it is composed of matter.

Can I have brainliest please?

4 0
3 years ago
Read 2 more answers
The amount of water (density 1.00 g mL-1) in grams that must be added to 26.2 g of
Damm [24]

Answer:

1720.8g water are necessaries

Explanation:

Mass percent is defined as the mass of solute (In this case, MgCl2) in 100g of solution (Mass MgCl2 + Mass water). To solve this question we must find the mass of solution that we need to produce th 1.5% by mass solution. Thus, we can find the mass of water that we need as follows:

<em>Mass solution:</em>

26.2g MgCl2 * (100g Solution / 1.5g MgCl2) = 1747g solution

<em>Mass water:</em>

1747g solution - 26.2g MgCl2 = 1720.8g water are necessaries

5 0
3 years ago
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