Sodium oxide and carbon dioxide
Explanation:
When sodium carbonate decomposes sodium oxide and carbon dioxide is produced: 
                           Na₂CO₃ → Na₂O + CO₂
- This kind of reaction is known as decomposition reaction. 
- In a decomposition reaction, 
- In this kind of reaction, two or more products form from a single reactant. 
- The breakdown of a compound into its component individual elements or other compounds falls into this reaction category. 
Learn more: 
Thermal decomposition brainly.com/question/11181911
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Hey there!
* Converts 1750 dm³ in liters :
1 dm³ = 1 L so 1750 dm³ = 1750 liters
* Convertes 125,000 Pa in atm : 
1 Pa = 9.86*10⁻⁶ atm so 9.86*10⁻⁶ / 125,000 => 1.233 atm
* Convertes 127ºC in K :
127 + 273.15 => 400.15 K
R = 0.082 atm.L/mol.K
Finally, it uses an equation of clapeyron :
p * V = n * R * T
1.233 * 1750 = n * 0.082 * 400.15
2157.75 = n * 32.8123
n = 2157.75 / 32.8123
n = 65.76 moles
hope this helps!
 
        
                    
             
        
        
        
The answer would be B. One region of the molecule has a small negative charge while another region has a small positive charge. However usually in polar bonds, charges or bond between the atoms are unequal (as opposed to having small equal charges).
        
             
        
        
        
Answer:
Force of attraction = 35.96  N
N
Explanation:
Given: charge on anion = -2
Charge on cation = +2
Distance = 1 nm =  m
 m
To calculate: Force of attraction.
Solution: The force of attraction is calculated by using equation,
 ---(1)
 ---(1)
where, q represents the charge and the subscripts 1 and 2 represents cation and anion.
k = 
F = force of attraction
r = distance between ions.
Substituting all the values in the equation (1) the equation becomes

Force of attraction = 35.96  N
N
 
        
             
        
        
        
Answer:
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