<span>The smallest unit of a compound is called a molecule. The correct option among all the options that are given in the question is the second option or the penultimate option or option "B". The other choices are incorrrect and can be negated. I hope that this is the answer that has actually come to your desired help.</span>
        
             
        
        
        
Answer:
See explanations
Explanation:
a.	Molarity = moles/Volume in Liters = 5moles/2Liters = 2.5M in NaCl
b.	Freezing Pt Depression
      1.	Sprinkling salt on icy surfaces
     2.	Using antifreeze in automobile cooling systems
     3.	<em>Not an application
</em>
     4.	Using salt to make ice cream
c.	pOH = -log[OHˉ] = -log(1x10ˉ¹⁰) = -(-10) = 10 => pH = 14 – pOH = 14 – 10 = 4
d.	H₂O + NH₃ => NH₄⁺ + OHˉ => Bronsted Acid is H₂O  (proton donor)
 
        
             
        
        
        
I think you divide something
        
             
        
        
        
<h3>You will pay $ 30876800</h3>
We'll begin by calculating the mass in ounce (oz) of a cube foot (ft³) of gold. This can be obtained as follow:
<h3 />
Density of gold = 19298 oz/ft³
Volume of gold = 1 ft³
<h3>Mass of gold =?</h3>
Density = mass /volume
19298 = mass / 1
<h3>Mass of gold = 19298 oz</h3>
Finally, we shall determine the cost of 19298 oz of gold. This can be obtained as follow:
1 oz = $ 1600
Therefore,
19298 oz = 19298 × 1600
19298 oz = $ 30876800
Therefore, a solid cube foot of gold (i.e 19298 oz) will cost $ 30876800
Learn more: brainly.com/question/15407624
 
        
        
        
Answer: Europe 
Explanation: it’s in germany