Question #10573

A 1.6 g samlpe of metal that appears to be gold required 5.8 j of energy to make an 18 degrees celcius temerature change. is the metal pure gold?

Expert's answer

Q = m*s*dT

m(metal) = 1.6 g

dT = 18 C

s(metal) = Q/(m*dT) = 5.8 J /

(1.6 g * 18 C) = 0.201 J/(g*C)

The specific heat of gold is 0.13 J/(g*C).

Therefore the metal cannot be pure gold.

m(metal) = 1.6 g

dT = 18 C

s(metal) = Q/(m*dT) = 5.8 J /

(1.6 g * 18 C) = 0.201 J/(g*C)

The specific heat of gold is 0.13 J/(g*C).

Therefore the metal cannot be pure gold.

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