To determine the strength of potassium permanganate with a standard solution of oxalic acid.
        
             
        
        
        
Answer:
Solids: definite shape and definite volume (highest density)
Liquid: indefinite shape and definite volume (glide past each other)
Gas: indefinite shape and indefinite volume (lowest density)
Explanation:
look at the answer
 
        
             
        
        
        
3 millimeters is the rock
 
        
             
        
        
        
Answer:

Explanation:
It is given that,
The radius of the inflated balloon is 7 cm.
We need to find the volume of air inside the balloon in milliliters. 
The balloon is in the shape of a sphere whose volume is given by :

Hence, the volume of the air inside the balloon is  .
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