Answer:
C
Explanation:
Because a planet is a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events.
 
        
                    
             
        
        
        
Take the 72 g and divid it by 6 which would equal 12 g each
        
             
        
        
        
The 7160 cal energy is required to melt 10. 0 g of ice at 0. 0°C, warm it to 100. 0°C and completely vaporize the sample.
Calculation,
Given data,
Mass of the ice = 10 g
Temperature of ice =  0. 0°C
- The ice at 0. 0°C is to be converted into water at 0. 0°C
Heat required at this stage = mas of the ice ×latent heat of fusion of ice
Heat required at this stage = 10 g×80 = 800 cal  
- The temperature of the water is to be increased from 0. 0°C to 100. 0°C 
Heat required for this = mass of the ice×rise in temperature×specific heat of water 
Heat required for this  = 10 g×100× 1 = 1000 cal
- This water at  100. 0°C  is to be converted into vapor.
Heat required for this = Mass of water× latent heat 
Heat required for this  = 10g ×536 =5360 cal
Total energy or heat required = sum of all heat = 800 +1000+ 5360  = 7160 cal
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