Question

200 g of ice at 0 degree celsius converts into water at 0 degree celsius in 1 minute

Answer 1

if 200 gram of ice at a Celsius convert into water in one minute when heat is supplied to it at a constant rate,how much time will 200g water at 0 Celsius will change to 20 Celsius? the heat of fusion of ice is maximum 80cal/g ,so melting 200 requires 16kcal,you are delivering heat at 16 kcal/min. heating liquid water requires about 1 Cal/g,so heating liquid water requires about 1cal/g,so heating 200g by 20crequires a 4kcal and would be delivered in 4/16 of a minute or 15sec.