Question

a temperatura de determinada substância e dr 50°F a temperatura absoluta dessa substância em kelvinns é

Answer 1

Olá !

Transformando 50 graus fahrenheit em kelvin...

$\mathsf{\dfrac{(T_{K}-273)}{5}=\dfrac{(T_{F}-32)}{9}} \\\\\\ \mathsf{\dfrac{(T_{K}-273)}{5}=\dfrac{(50-32)}{9}} \\\\\\ \mathsf{9(T_{K}-273)=5(50-32)} \\\\\\ \mathsf{9T_{K}-2457=250-160} \\\\\\ \mathsf{9T_{K}-2457=90} \\\\\\ \mathsf{9T_{K}=90+2457} \\\\\\ \mathsf{9T_{K}=2547} \\\\\\ \mathsf{T_{K}=\dfrac{2547}{9}} \\\\\\ \boxed{\mathsf{T_{K}=283~~K}}$

$\textbf{RESPOSTA~~:}$ 283 K