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Gnom [1K]
3 years ago
15

A 47.35 g mass of copper is heated from 20 degrees celsius to 85 degrees celsius. How many joules were added to accomplish this?

Chemistry
1 answer:
lora16 [44]3 years ago
4 0

Answer:

1185.0 J.

Explanation:

  • The amount of heat needed to accomplish this process can be calculated using the formula:

<em>Q = m.C.ΔT</em>, where,

Q is the amount of heat needed,

m is the mass of the copper <em>(m = 47.35 g)</em>,

C is the specific heat of Cu<em> (C = 0.385 J/g.°C)</em>,

ΔT is the temperature difference (the final temperature - the initial temperature <em>(ΔT = 85.0 - 20.0 = 65.0 °C)</em>.

<em>∴ The amount of heat needed Q = m.C.ΔT </em>= (47.35 g) (0.385 J/g.°C) (65.0 °C) = 1184.933 J ≅ 1185.0 J.

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