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ch4aika [34]
3 years ago
11

Which of these is a covalent compund A NO2 B LiCl C AlCl3 D Na2S

Chemistry
1 answer:
ElenaW [278]3 years ago
6 0
A. NO2 is a covalent compound
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Geiger counters and scintillation counters differ in<br> Blank .
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Can someone please explain what to do it’s late at night and I need sleep but I forgot I had this homework please help me with a
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3 years ago
How do the elements in each group differ? How are they similar?
bulgar [2K]

Answer:

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Explanation:

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3 years ago
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How many moles are present in 2.3 x 1023 molecules of NH3?
avanturin [10]

Answer:

<h2>0.38 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{2.3 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{2.3}{6.02}  \\  = 0.382059...

We have the final answer as

<h3>0.38 moles</h3>

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5 0
3 years ago
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