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ahrayia [7]
1 year ago
6

A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 16.84 nm. What is the total wi

dth of a crystal in
millimeters 105 molecules across? Write your answer as a decimal.
Chemistry
1 answer:
nadezda [96]1 year ago
3 0

Answer:

u can just multiply 1

Explanation:

krkrfmfmmfdkd

You might be interested in
Select the correct answer.
ivann1987 [24]

Answer:

C.

Explanation:

The electronic configuration of N (7 electrons): 1s² 2s² 2p³.

The orbital 1s is filled with two electrons and their spinning direction is opposite and also electrons of 2s.

3p contains (3 electrons) should fill the 3 orbitals firstly. Every orbital contains 1 electron and be in the same spin direction.

So, the right choice is c.

A is wrong because 2 electrons of 3p are paired in the first orbital before filling every orbital.

B is wrong because the 2 electrons of 1s and 2s are in the same direction and also 2 electrons of 3p are paired in the first orbital before filling every orbital.

D is also wrong the 2 electrons of 1s and 2s are in the same direction and the electron in the second orbital of 3p are in opposite direction of the other 2 electrons.

7 0
3 years ago
Consider the work of Thomson, Rutherford, and Bohr. In your opinion, which was the most important and why? Be sure to state what
kobusy [5.1K]
The two of them both made models of the current atom, which was very excellent because now we could imagine how an atom would look.  I would say that the best one was the electron orbital configuration because we needed to know what valence electrons are. 
4 0
3 years ago
Read 2 more answers
The density of a substance is 17.5 g/mL. Determine the volume (in mL) of 63.6 g of this substance.​
andreyandreev [35.5K]

Answer:

<h2>volume = 3.63 mL</h2>

Explanation:

The density of a substance can be found by using the formula

<h3>Density =  \frac{mass}{volume}</h3>

Since we are finding the volume

Making volume the subject we have

<h3>volume =  \frac{mass}{Density}</h3>

From the question

mass = 63.6 g

Density = 17.5 g/mL

Substitute the values into the above formula and solve for the volume

That's

<h3>volume =  \frac{63.6}{17.5}</h3>

We have the final answer as

<h3>volume = 3.63 mL</h3>

Hope this helps you

5 0
3 years ago
the radioisotope radon-222 has a half-life of 3.8 days. how much of a 65-g sample of radon-222 would be left after approximately
MariettaO [177]
Use the 1st order decay equation 
<span><span>Cfinal</span>=<span>Cinitial</span><span>e<span>−kt</span></span></span> 
by filling in and doing the math you will get:

<span> </span><span>Cfinal</span><span> = 1.11 grams Rn-222 after 23 days. 
 
hope this helps 

</span>
7 0
2 years ago
HELP PLEASE!!!!
Olegator [25]

Answer:

#4. 32.06

#5. 10.90

Explanation:

I don't if 5 is completely correct, but number 4 should be correct.

6 0
3 years ago
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