Qtmelt = mciΔT
tmelt = mciΔT/Q
An open container holds ice of mass 0.550 kg at a temperature of -15.3 °C. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 900 J/minute. The specific heat of ice to is 2100 J/kg⋅K and the heat of fusion for ice is 334 × 103 J/kg.
a) How much time tmelts passes before the ice starts to melt?
tmelts = ___ minutes
b)From the time when the heating begins, how much time trise does it take before the temperature begins to rise above 0 °C?
trise = ____ minutes
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