Answer:
from the 1st equation:
   4NH3                  4NO
   4 *(68)                 4*30
   1216                     X  mass of NO = 536.5 g 
from the 2nd Equation 
   2NO           2NO2
    2*30            2* 46
    536.5          x         mass of NO2 = 822.6 grams
from the 3rd Equation
   3NO2                         2HNO3
    3*(46)                           2* (63)
      822.6                             X                mass of nitric acid = 751.06 gram 
b)  % yields = ( 96.2%* 91.3% *91.4%)= 80.3%
 
        
             
        
        
        
Natural  gas  is primarily composed of   methane (CH4)
 Natural  gas  is a naturally  occurring  hydrocarbon  mixture  which  is  primarily  composed of Methane(CH4),  but it  also  contains ethane,propane and  heavier hydrocarbon. In addition  it  contain small amount  of nitrogen, carbon dioxide,hydrogen sulfide and traces amount of water.
        
             
        
        
        
It could not hold good for elements heaver than calcium.
        
             
        
        
        
Hello!
A buffer is composed of a weak acid and its conjugate base or a weak base and its conjugate acid. From the given list:
HCl and HF: Strong Acid and Weak Acid. NOT BUFFER
HF and NaF: Weak Acid and Conjugate Base. BUFFER
HC₂H₃O₂ and  KC₂H₃O₂: Weak Acid and Conjugate Base. BUFFER
NaOH and NH₃: Strong Base and Weak Base. NOT BUFFER.
Have a nice day!
        
             
        
        
        
Answer:
known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)
Explanation: