Solids have least energetic molecules because they are tightly packed.
        
             
        
        
        
Sorry for the scribbles lol
 
        
        
        
Answer:
The active ingredients in baking soda (NaHCO3) are 
 and
 and 
when Baking soda reacts with Acetic acid 
Molecular equation 
  NaHCO3(aq) + CH3COOH(aq) → Na(CH3COO)(aq) + CO2(g) +H2O(l) 
Ionic equation 
 →
 →   
as  is present on both sides so it will cancel out and the net ionic equation will be
 is present on both sides so it will cancel out and the net ionic equation will be 
 →
 → 
 
        
             
        
        
        
Answer:
The answer to your question is
1.-  1.686 x 10²⁴ atoms
2.- 0.25 moles
Explanation:
1.- 
               1 mol ---------------- 6.023 x 10²³ atoms
              2.8 moles ----------  x
               x = (2.8 x 6.023 x 10²³) / 1
               x = 1.686 x 10²⁴ atoms
2.-           1 mol ------------------ 6.023 x 10 ²³ molecules
                x moles -------------  1.50 x 10²³ molecules
               x = (1.50 x 10²³ x 1) / 6.023 x 10²³
               x = 0.25 moles