Air is a insulator in normal conditions,but when heated up to high temperatures it becomes a conductor. <span />
        
             
        
        
        
9.0 grams will produce 11 L of hydrogen
        
                    
             
        
        
        
Explanation:
Rate law is defined as the rate of a reaction is directly proportional to the concentration of reactants at constant temperature.
                ![Rate \propto [\text{concentration of reactant}]^{n}](https://tex.z-dn.net/?f=Rate%20%5Cpropto%20%5B%5Ctext%7Bconcentration%20of%20reactant%7D%5D%5E%7Bn%7D)
                                   = k ![[\text{concentration of reactant}]^{n}](https://tex.z-dn.net/?f=%5B%5Ctext%7Bconcentration%20of%20reactant%7D%5D%5E%7Bn%7D)
where,     k = rate constant 
                 n = order of reaction
For the given reaction, 
Hence, its rate will be as follows.
                    Rate = ![k[H_{2}][NO]](https://tex.z-dn.net/?f=k%5BH_%7B2%7D%5D%5BNO%5D)
Also, it is known that slowest step in a chemical reaction is the rate determining step.
Hence, for the given rate law correct reaction is as follows.
Step 1 :  (slow)
 (slow)
Balancing this equation it becomes  (slow)
 (slow)
Step 2:  (fast)
 (fast)
 
        
             
        
        
        
Answer:
I think the answer is A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
Explanation:
I hope this helps.