Be heavier
density=mass÷volume
if two items have the same size they have the same volume so the heavier one will be the denser one
        
             
        
        
        
A-200 kg
I hope this helped xx
        
                    
             
        
        
        
Answer:

Explanation:
Given:
Solute Diffusion rate  = 4.0 × 10⁻¹¹ kg/s
Area of cross-section = 0.50 cm²
Length of channel  =0.25 cm
Now for the new channel
Area of cross-section = 0.30 cm²
Length of channel  =0.10 cm
let the Solute Diffusion rate  of new channel = s
now equating the diffusion rate per unit volume for both the channels

thus,

 
        
             
        
        
        
Thermal energy from the coffee is transferred to the mug.