To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capaci...

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To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capaci...

To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the rock and finds it has a mass of 4.2 g . She then finds that upon absorption of 50.8 J of heat, the temperature of the rock rises from 25 ∘C to 55 ∘C.

Find the specific heat capacity of the substance composing the rock.

Determine whether the value is consistent with the rock being pure gold.

science chemistry

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Answer 1

Answer #1

q= mass * specific heat capacity *change in temperature

50.8 = 4.2* specific heat capacity*(55-25)

specific heat capacity= 0.403j/g.⁰c

no.because the specific heat capacity of gold is 0.129j/g⁰c .it is nearer to iron

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Answer 2

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