taylortaylor6635 taylortaylor6635
  • 14-05-2019
  • Chemistry
contestada

How much energy is absorbed as heat by 20. G of gold when it is heated from 25ºc to 35ºc? The specific heat of gold is 0.13 j/g·ºc.

Respuesta :

Edufirst
Edufirst Edufirst
  • 23-05-2019

Answer:

  • 26. J

Explanation:

1) Data:

a) m = 20. g

b) ΔT = 35°C - 25°C

c) Cs = 0.13 J / g°C

2)  Formula:

  • Heat absorbed, Q = m × Cs × ΔT

3) Solution:

  • Q = 20. g × (35°C - 20°C) × 0.13 J/ g°C = 20. g × 10°C × 0.13 J/g°C = 26. J ← answer

The answer shows two significant figures.

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