Answer:
D
Explanation:
Hopefully this helps you!
 
        
                    
             
        
        
        
An atom hopefully this helps
        
                    
             
        
        
        
Answer:
Magnesium loses two electrons. 
Explanation:
- As clear from the reaction Mg converted from <em>Mg(s) to Mg²⁺</em>, so Mg converted from the oxidation state (0) to (2+).
<em>∴ Mg losses two electrons.</em>
- Cl⁻ remains as it is, so it is considered as a catalyst and neither loss nor gain any electrons.
<em>So, the correct choice is Magnesium loses two electrons.</em>
 
        
                    
             
        
        
        
Answer:
1.7927 mL
Explanation:
The mass of solid taken = 4.75 g
This solid contains 21.6 wt%  , thus,
, thus, 
Mass of  =
 =  = 1.026 g
 = 1.026 g
Molar mass of  = 261.337 g/mol
 = 261.337 g/mol
The formula for the calculation of moles is shown below:
 
Thus,
 

Considering the reaction as:

1 moles of  react with 1 mole of
 react with 1 mole of 
Thus, 
0.003926 mole of  react with 0.003926 mole of
 react with 0.003926 mole of 
Moles of  = 0.003926 mole
 = 0.003926 mole
Also, considering:

Molarity = 2.19 M
So, 

Volume = 0.0017927 L
Also, 1 L = 1000 mL
<u>So, volume = 1.7927 mL</u>