

= 2 × 23 + 2 × 52 + 2 × 16 
= 182 grams
1 mole of  weighs = 182 g
 weighs = 182 g 
8 moles weigh = 8× 182 
=
or 

 
        
             
        
        
        
Answer:
pretty sure its table salt
 
        
                    
             
        
        
        
Explanation:
If potassium is burnt the ions go into a high state of energy. Once they cool, it gives off energy in the form of a visible spectrum which has a characteristic color Now, The cobalt glass blocks out yellow light, and potassium ion which is purple in color is visible.
 
        
             
        
        
        
Answer:            <span>The molecules of a substance which must have the 
<u>a</u></span>
<u>bility to move past one another</u> are said to be flexible.
Explanation:                   Those substances are said to be flexible which can be
 bent without breaking. There are many substances which are 
hard in nature but still can be bent. The hardness of such materials is due to 
strong interactions between the molecules and the flexibility comes due to their 
amorphous backbone. Therefore, greater the 
crystalline level of macromolecules lesser is the flexibility and greater the amorphous character greater is the flexibility and vice versa. Also, the flexibility of polymers is increased by adding 
plastisizers in it. Plastisizers make the hard polymers flexible by breaking the crosslinkers and enabling the macromolecules to move past one another.