Answer:
1 
Explanation:
there is only one sulphur (S) atoms in the formula for sodium sulphate
 
        
                    
             
        
        
        
Glucose is a simple sugar with the molecular formula C6H12O6. It is a carbohydrate.
        
                    
             
        
        
        
Freezer and refrigerator--> Too cold for most bacteria to grow (reproduce). Oven --> too hot for bacteria to survive
        
             
        
        
        
Answer:
13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.
Explanation:
Length of the base = l 
Width of the base  =  w 
Height of the pyramid = h
Volume of the pyramid = 
We have:
Rate at which water is filled in cube = 
Square based pyramid:
l = 6 cm, w = 6 cm, h = 13 cm
Volume of the square based pyramid = V





Differentiating V with respect to dt:




Putting, h = 4 cm


13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.