Answer:
There are 35 protons in a single atom of Bromine
Explanation:
The atomic number of an element represents the number of protons contained in the nucleus of the atom! Thus, since Bromine's atomic number is 35, that means there are 35 protons! 
Hope this helps! :)
 
        
             
        
        
        
Answer:
The red arrow from igneous to sedimentary rock
Explanation:
When rocks are weathered and eroded, they become sediment. This sediment is later compacted and cemented to form sedimentary rock. Therefore, the red arrow going from igneous rock to sedimentary rock represents weathering and erosion.
 
        
             
        
        
        
Answer:
 The answer is B. balanced forces
 
        
             
        
        
        
Specific gravity is the ratio of density of substance and density of water
We know that density of water = 1 g /mL at standard conditions
now as given that the 0.8 Kg of the substance / object is able to displace 500mL of water , it means that 
Mass of object = 800g
The volume occupied by 800g of object = 500 mL
Density = mass / volume
Density of object = 800 / 500= 1.6 g / mL 
The specific gravity of object = density of object  / density of water = 1.6 / 1 = 1.6 (no units)