How much heat in joules is gained when a 34.5 g bar of gold is heated from 26.4°C to 75.3°C? specific heat of gold on 0.129 J/grams degrees Celsius.

Question

Chemistry

Valentin Holland

7 June, 02:34

How much heat in joules is gained when a 34.5 g bar of gold is heated from 26.4°C to 75.3°C? specific heat of gold on 0.129 J/grams degrees Celsius.

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Answers (1)

Know the Answer?

Sebastian Harrington · Answer 1

Q = 217.63J

Explanation:

Data;

Mass = 34.5g

T1 = 26.4°C

T2 = 75.3°C

c = 0.129J/g°C

Energy (Q) = mc (T2 - T1)

Q = 34.5 * 0.129 * (75.3 - 26.4)

Q = 4.4505 * 48.9

Q = 217.629J

Q = 217.63J

The heat gained was 217.63J