It is softer than topaz and and it is softer than diamond (diamond has a Mohs hardness of 10, which is the highest value of the scale) 
        
                    
             
        
        
        
Markovnikov rule, in organic chemistry, a generalization, formulated by Vladimir Vasilyevich Markovnikov in 1869, stating that in addition reactions to unsymmetrical alkenes, the electron-rich component of the reagent adds to the carbon atom with fewer hydrogen atoms bonded to it, while the electron-deficient component ...
        
                    
             
        
        
        
Answer:
<h2>6.14 cm³</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula

From the question we have

We have the final answer as
<h3>6.14 cm³</h3>
Hope this helps you
 
        
             
        
        
        
Answer:
Bombardment by asteroids
Explanation:
All of the other ones explain themselves