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Q1=0.3kg * 2100 J/kg*C [0C - (-5C)]
Q1= 630J/C * 5C = 3150 J
Q2= ctopnienia * m
Q2 = 335 000 J/kg * 0.3 kg = 100 500 J
Q3 = m* cwwody * T
Q3 = 0.3 kg * 4200 J/kg*C * 5 C = 6300 J
Q = 3150 + 100 500 + 6300= 104 280 J