Respuestas

2011-11-23T20:13:27+01:00

m1= 2 kg                                     m2=?

t1 = 20C                                        t2 = 100 C

t3= 35 C                                         t3= 35 C

delta t1 = 35-20 =15C                       delta t2 = 100 - 35 = 65 C

 Q1 = Q2

m1*cw*delta t1 = m2* cw* delta t2  /:cw

m1*delta t = m2 * delta t2   /: delta t2

m2 = m1* delta t1/ delta t2 = (2 kg*15 C)/ 65 C = 30/65 kg = 6/13 kg = ok.0,46 kg