Question

por favorrr me ajudem!!​

Answer 1

m × c × ( Tf - Ti ) + m × c × ( Tf - Ti ) = 0

400 × 0,2 × ( Tf - 40 ) + 200 × 0,1 × ( Tf - 160 )

80 × ( Tf - 40 ) + 20 × ( Tf - 160 ) = 0

80Tf - 3200 + 20Tf - 3200 = 0

100Tf - 6400 = 0

100Tf = 6400

Tf = $\frac{6400}{100}$

Tf = 64°C

Bons estudos !