lailabelle9841 lailabelle9841
  • 09-01-2020
  • Physics
contestada

how many joules of energy are required to raise thetemperature
of 100 g of gold from 20.0 degrees celcius to 100degree
celcius?

Respuesta :

Netta00 Netta00
  • 09-01-2020

Answer:

Q=1040 KJ

Explanation:

Given that

mass ,m = 100 g

We know that 1 kg = 1000 g

100 g = 0.1 kg

m = 0.1 kg

T₁=20°C

T₂=100⁰C

Specific capacity for the gold

Cp=130 KJ/kgK

The energy required to raise temperature from T₁ to T₂

Q= m Cp (T₂ -T₁)

Now by putting the values

Q= m Cp (T₂ -T₁)

Q= 0.1 x 130 (100 -20) KJ

Q=1040 KJ

Therefore the energy required is 1040 KJ.

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