Iodine..............................
        
                    
             
        
        
        
Titanium is the haviest metal .
        
                    
             
        
        
        
Answer:
a. Approximately  .
.
b. Approximately  .
.
Explanation:
The unit of concentration " " is equivalent to "
" is equivalent to " ", which means "moles per liter."
", which means "moles per liter." 
However, the volume of both solutions were given in mililiters  . Convert these volumes to liters:
. Convert these volumes to liters:
 .
.
 .
.
In a solution of volume  where the concentration of a solute is
 where the concentration of a solute is  , there would be
, there would be  (moles of) formula units of this solute.
 (moles of) formula units of this solute. 
Calculate the number of moles of  formula units in each of the two solutions:
 formula units in each of the two solutions:
Solution in a.:
 .
.
Solution in b.:
 .
.
What volume of that  (same as
 (same as  )
)  solution would contain that many
 solution would contain that many 
For the solution in a.:
 .
.
Convert the unit of that volume to milliliters:
 .
.
Similarly, for the solution in b.:
 .
.
Convert the unit of that volume to milliliters:
 .
. 
 
        
             
        
        
        
<em>The statement that gives the relationship between energy needed in breaking a bond and the one that is released after breakin</em>g is 
 The amount of energy it takes to break a bond is always less than the amount of energy released when the bond is formed.
- Bond energy can be regarded as amount of energy that is required in  breaking a particular bond. 
- For a bond to be broken Energy will be  added and when a bond is broken there will be release of energy 
- Bond breaking can be regarded as  endothermic process, it is regarded as endothermic  because there is a lot of energy required to be absorbed.
- Where ever a bond is broken, there must be formation of another bond
-  Bond forming on the other hand can be regarded as exothermic process, since there is a release of  releases energy.
Therefore, more energy is required in breaking of bond compare to energy released after breaking of bond.
Learn more at : brainly.com/question/10777799?referrer=searchResults
 
        
             
        
        
        
Answer:
attached below 
Explanation:
Structure of two acyclic compounds with 3 or more carbons that exhibits one singlet in 1H-NMR spectrum 
a) Acetone CH₃COCH₃
Attached below is the structure 
b) But-2-yne (CH₃C)₂ 
Attached below is the structure