Answer:
it is a chemical change
Explanation:
it is a chemical change since the lemon juice can not be returned to its original form some part of it had been converted to gas form
 
        
             
        
        
        
Multiply .800 moles of O2 by Avagadro's number divided by 1 mole. This will get rid of the moles on the bottom and leave you with molecules. So technically .800 times 6.02x10^23.
        
             
        
        
        
Answer:
Protons: 84
Neutrons: 127
Explanation:
The number of protons is the atomic number. The number of neutrons can be found by subtracting the proton number (84) from the isotope number (211)
 
        
             
        
        
        
I think it would be:
Is the author stating fact or opinion?
Does the author have evidence for the given facts?
Maybe 
How many article has the author written before?
Ones you add if you wanted to is 
Does the author give any sources? (Like where they got the info)