Physics-
General
Easy

Question

400 cal of heat is utilised to melt ice into H2O at the same temperature. The mass of ice melted is

  1. 5 g    
  2. 50 g    
  3. 200 g    
  4. 400g    

The correct answer is: 5 g


    Given that
    Q = 400 cal
    L equals 80 fraction numerator c a l over denominator g end fraction
    Q = mL
    rightwards double arrow m equals fraction numerator Q over denominator L end fraction
    rightwards double arrow m equals fraction numerator 400 c a l over denominator 80 c a l divided by g end fraction
    Þ m=5g

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