Odpowiedzi

2009-04-06T17:50:38+02:00
M₁= 50g
m₂ = ?
t₁ = -10°C
t₂ = 40°C
t³ = 10°C
m × c × (t₂- t³) = m c (t₃- t₁)

0,05 (40 - 10) = m (10 + 10)
0,05 × 30 = 20m
1,5 = 20m
m = 0,075
Wlano 75 g wody.