No. Of hydrogen atoms is4
No. Of sulphur atoms is 2
No. Of oxygen atoms is 8
        
                    
             
        
        
        
Answer:
f = 347.08 N
Explanation:
The frictional force exerted by the floor on the refrigerator is given as follows:

where,
f = frictional force = ?
μ = coefficient of static friction = 0.58 
W = Weight of refrigerator = mg
m = mass of refrigerator = 61 kg
g = acceleration due to gravity = 9.81 m/s²
Therefore,

<u>f = 347.08 N</u>
 
        
             
        
        
        
a tree truck
is the answer i hope this helps you xD
 
        
                    
             
        
        
        
Answer:
3.72 kJ
Explanation:
QH = 6.45 kJ
TH = 520 K 
Tc = 300 K 
Qc = ?
By use of Carnot's theorem 
Qc / QH = Tc / TH
Qc / 6.45 = 300 / 520 
Qc = 3.72 kJ