Question

que massa de vapor a 100 c deve ser misturada? heeelllpppp :)

Answer 1

vamos chamar vapor m(v) e agua m(a) portanto m(v)=m(a)
 
L(f)x m(g)+c(a) x m(g) x(t(f)-0,0 c)=m(v) x L(v) + m(v) x c(a) x (t(i)-t(f)
m(v)=L(f) x m(g) +c(a) x m(g) x (t(f)-t(i) / L(v)+ c(a) x (t(i)-t(f)
m(v)=79,7 cal/g x 150 g+ 1cal/g x 150g x (50-0,0)/539cal/g + 1cal/g x (100-50)
m(v)=32,98 g  arredoando temos  33 g