Hi. 2fouls! :)
First convert the number from kilometer to miles:


Now to find the miles per minutes,divide the miles per hours by 60 (the amount of minutes in an hour.)


The car is travelling at a speed of 0.860766667 miles/minute.
Hope this helps.
-Benjamin
 
        
        
        
Water is a polar solvent. Since, 'Like dissolves like' a polar compound will be most soluble in water whereas a non-polar compound will be the least soluble.
The increasing order of polarity for the given organic compounds is:-
CH3OCH3 < CH3NH2 < CH3CHO < CH3CH2OH
Ether is the least polar and hence least soluble in water.
 
        
                    
             
        
        
        
 (B), because 1.0 moles would be 6.02 x 10^23 molecules. So you have half a mole.<span>
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Mouthwash: 
solvent - water 
solute - alcohols 
vinegar:
solvent - water
solute - acetic acid 
bleach:
solvent - water 
solute - sodium hypochlorite 
hope this helps!!