Answer:
Carbon
Explanation:
I just finished this and that's what I got from my periodic table.
 
        
             
        
        
        
Answer:In regards to writing the formula, we know that magnesium has a charge of 1+ and sulfate, SO4, has a charge of 1-. Sulfate is a polyatomic ion so the charge of the whole thing is (SO4)1-. When you combine them you end up with MgSO4 and the "heptahydrate" is seven water molecules.
Explanation:
 
        
                    
             
        
        
        
Answer:
0.08 g
Explanation:
100.0 mL = 0.10 L
Multiply the volume by the molarity to find moles.
0.10 L × 0.20 M = 0.002 mol
Convert moles to grams.
0.002 mol × 40 g/mol = 0.08 g
 
        
             
        
        
        
I believe this answer is A. Moving electrons generate magnetic forces. Hope this helps!!! :)