AracelysC2854 AracelysC2854
  • 28-01-2020
  • Physics
contestada

If no heat is lost to the surroundings, how much heat must be added to raise the temperature from 20.0 ∘C to 85.0 ∘C ?

Respuesta :

Memoona
Memoona Memoona
  • 29-01-2020

Answer:

Explanation:

[tex]C_{water}[/tex] = 4190 J/kg.K

[tex]C_{Al}[/tex] = 910 J/Kg. K

[tex]m_{Al}[/tex] = 1.50 kg

[tex]m_{water}[/tex] = 1.80 kg

[tex]Q_{added} = Q_{Al} + Q_{water}[/tex]

[tex]=m_{Al} C_{Al}[/tex]ΔT + [tex]m_{water} C_{water}[/tex]ΔT

= (1.50)(910)(85.0-20)+(1.80)(4190)(85.0-20)

= 578,955 J

= 579 kJ

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