Answer:
0.50 M
Explanation:
Given data
- Mass of sodium sulfate (solute): 7.1 g
- Volume of solution: 100 mL
Step 1: Calculate the moles of the solute 
The molar mass of sodium sulfate is 142.04 g/mol. The moles corresponding to 7.1 grams of sodium sulfate are:

Step 2: Convert the volume of solution to liters
We will use the relation 1 L = 1000 mL.

Step 3: Calculate the molarity of the solution

 
        
                    
             
        
        
        
Answer : The Lewis-dot structure of  is shown below.
  is shown below.
Explanation :
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
The given molecule is, 
As we know that rubidium has '1' valence electrons, iodine has '7' valence electrons and oxygen has '6' valence electrons.
Therefore, the total number of valence electrons in  = 1 + 7 + 2(6) = 20
 = 1 + 7 + 2(6) = 20
As we know that  is an ionic compound because it is formed by the transfer of electron takes place from metal to non-metal element.
  is an ionic compound because it is formed by the transfer of electron takes place from metal to non-metal element.
 
        
             
        
        
        
Because they can't get trapped in.
        
             
        
        
        
Answer:
b. octadecanoic acid
Explanation:
For explanation please see the attached file.
 
        
             
        
        
        
Yes it is, because lucid means characterized by clear perception.