Question

pooooor favor colegas..

Answer 1

Olá.

1.

$F= 1,8*C+32 \\ 75= 1,8*C+32 \\ 75-32= 1,8C \\ 43= 1,8C \\ C= \frac{43}{1,8} \\ \boxed{C= 23,8} \\ \\ K= C+273 \\ K= 23,8+273 \\ \boxed{K= 296,8}$

2.

$K= C+273 \\ K= -6+273 \\ \boxed{K= 267}$

3.

Pela propriedade de calorimetria, temos:

$Q= m*c*\Delta{t} \\ Q= \frac{100}{1.000} *0,5*(110-10) \\ Q= 0,1*0,5*100 \\ Q= 0,1*50 \\ \boxed{\boxed{Q= 5 cal}}$

Bons estudos!