Odpowiedzi

2010-03-23T21:06:19+01:00
Mw = 0,8kg
t = 100°C
Δt1 = 24°C - 20°C = 4°C
Δt2 = 100°C - 24°C = 76°C
mo = ?
cpw = 4200 J / K*kg
cpo = 128 J / K*kg

Qw = cpw * mw * Δt1 = 4200 * 0.8kg * 4 = 13440J
Qw = Qo
Qo = cpo * mo * Δt2
mo = Qo / cpo * Δt2
mo = 13440 / 128 * 76 = 1.4kg
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