Answer:
liquid oxygen is highly flammable
Explanation:
near any source of heat. liquid oxygen can explode to flames thus being hazardous
 
        
             
        
        
        
To be honest I don’t even know
        
                    
             
        
        
        
Answer:
D. H2SO4
Explanation:
The chemical  formula of a compound is an expression that stares out the elements (in form of symbols)present in a compound and the number of the atoms.
In the image;
There is one sulphur (S) atom, 4 oxygen(O) atoms and 2 hydrogen (H) atoms
The chemical formula is;
H2SO4.
The correct option is option D.
 
        
             
        
        
        
Answer:
The functional group
Explanation:
A functional group defines a hydrocarbon. an ester the functional group is an O- alkyl group while that one of an alcohol is -OH group. An aldehyde is a functional group on its own.
 
        
                    
             
        
        
        
A) Head to tail joining of monomers. :) (confirmed correct answer, I took the test)