Tornado is a spiral of debris
        
                    
             
        
        
        
Answer:
B. Household ammonia.
Explanation:
NH₃ is a base, so the solution always will be basic.
NH₃ takes the proton from the water. In conclusion we have free OH⁻ in medium, that's why the solution is basic.
NH₃ + H₂O → NH₄⁺  +  OH⁻
- HCl + H₂O → H₃O⁺  + Cl⁻
This reaction makes an acid solution, cause the H₃O⁺
- Vinegar is a compound made of acetic acid.
CH₃COOH  + H₂O  ⇄  H₃O⁺  +  CH₃COO⁻
This reaction also makes an acid solution, cause the H₃O⁺
- Pure water makes neutral solution. It is not acid, neither basic.
2H₂O ⇄  H₃O⁺  +  OH⁻
 
        
             
        
        
        
More the number of turns, more will be the magnetic field produced.
Hence wire A will have magnetic field greater than wire B.
Hope this helps!
        
                    
             
        
        
        
Hey there! 
To calculate the percent by mass of the Ca(NO₃)₂ we need to find the total mass first by adding. 
896.92 + 22.63 = 919.55 
In total, the solution is 919.55 grams. 
To find the percent of Ca(NO₃)₂ in the solution, divide the mass of Ca(NO₃)₂ by the total mass and multiply by 100. 
22.63 ÷ 919.55 = 0.0246 
0.0246 x 100 = 2.46 
Ca(NO₃)₂ makes up 2.46% of the solution. 
Hope this helps! 
 
        
             
        
        
        
4km I believe is the answer