Question

mistura-se 100g de latao a 80c com 50g de H2O a 20c obten o equilibrio termico a 29c calcule o color especifico do latao

Answer 1

send Q=mcΔt

QA+QB=0
100.c.(29-80)+50.1.(29-20)=0
100.c.(-51) + 50.9=0
-5100c+400=0
-5100c=-400
5100c=400
51c=4
c=4/51
c=0,078 cal/g.°C